ABB PointMaster 200 Series Manual de usuario

PointMaster 200 6-channel Multipoint Recorder

Version with LC display

Version with LED display

Version with scales

Operating manual - Interface Description 42/41-25 EN Rev. 0.0

Contents

Page

Description ............................... 3

Technical data

of bus connection RS-485 ................. 3

Data formats .............................. 4

Data transmission

General ..................................... 6

Telegram characters ............................ 6

Permissible addresses .......................... 6

Telegram formats, Framework speciﬁcations ........... 6

Telegram SD1 ............................. 7

Telegram SD2 ............................. 7

Telegram SD3 ............................. 8

Transmission rules ............................. 8

Parameter

Addressable parameters ......................... 9

Parameter ﬁeld addresses ........................ 9

Parameter - Addresses

System parameter 10H ...................... 10

Channel parameters 11H to 16H ................ 13

Text lines 17H ............................. 17

Print intervals 18H .......................... 17

Synchronisation times for text output 19H ......... 18

Print colours 1AH ........................... 18

DI assignment 1BH ......................... 19

Date and time 1CH ......................... 20

Calibration data 1DH ........................ 20

Channel measured values and instrument status 1EH 20

Entering measured values into recorder 1FH ....... 22

Reading accounting data 20H .................. 23

Writing equipment status 21H .................. 24

Creation of text blocks ................... 25

Send printout lines to recorder ..................... 25

Scanning of printer status ........................ 26

Sending a display line to the recorder F2H ........... 26

Error register for communication FFH ................ 27

WIZCON connection of the recorder ...... 28

Interrogation of 8 values ......................... 28

Modiﬁcation of 2 values .......................... 28

Numerical formats .............................. 29

Parameter addresses for function codes 04H and 07H . . . 29

Interrogation of binary information .................. 30

Parameter addresses for function code 05H ........... 30

Character set table ........................ 31

Z-18967

2Contents

1 Description

Provided for communication with the multi-point recorder is an

RS 485 interface. The type of data protocol used is designed to

suit DIN 19 245 Part 1 (Proﬁbus protocol). Only a part of the

directives were taken into account. Among others, the directives

on the operation of a multimaster (Token-Passing-Procedures)

were not taken into account, since the recorder is always a

passive subscriber.

2 Technical data for bus connection RS 485

Bus structure

Line without branchings

Stub to subscriber < 0.3 m

Medium

shielded, twisted 2-wire line

surge resistance 100...130 Ω, for f > 100 kHz

Cable capacity < 60 pF/m

Cross section ≥0.22 mm2

Line length

≤1200 m

Number of bus subscribers

32 (active and passive)

Transmission speed

600 / 1200 / 2400 / 4800 / 9600 / 19200 baud

Type of transmission

symmetrical

Driver output

idle state ±5 V, with load ±1.5 V

load resistance 60 Ω

Receiver

sensitivity 200 mV

input resistance 12 kΩ

Grounding

The shield should be grounded on both ends to arrest high

frequency fault states

Potential balancing

Potential variations between the data reference potentials

(GND) of all bus subscribers may not exceed ±7V

Fig. 1 Rear wall with RS 485 interface

Z-18064

Fig. 2 Terminal layout of RS 485 interface

Z-16529 (9-pin connector SUB D)

Pin 1 shielding

Pin 3 RxD (+)

Pin 4 I/O converter (+)

Pin 5 GND (reference potential)

Pin 6 +5 V

Pin 8 RxD (−)

Pin 9 I/O converter (−)

The voltage of +5 V on pin 6 is only required when the recorder

is used as a bus end-unit.

The shielding is applied through a blade-type terminal on the

recorder case.

Description • Technical Data ... 3

The quiescent bus potential is ﬁxed with the resistors Rd,R

tund

Ru.

Rd= 390 Ω

Rt= 150 Ω

Ru= 390 Ω

Wiring should take place in accordance with Fig. 3. The resistors

Rd,R

tand Rushould be installed in the 9-pin bus connector in

such way that the recorder can be separated from the bus with

the bus remaining closed.

Fig. 3 Bus end wiring

Z-17340

Data formats

The data to be transmitted can be formatted in four different

ways:

− Type BYTE Value range 0...255

− Type CHAR Value range −128...+127

− Type WORD Value range 0...65535

− Type FLOAT Value range

±1.175494E−38..±3.402823E+38

BYTE

The BYTE format is used for the selection of parameters from

the tables in the “Parameter” section.

CHAR

The CHAR format is used when ASCII characters are

transmitted. Hex-codes must be used.

WORD

The WORD format consists of 2 bytes and is used when

integers are to be transmitted without preceding signs (integer

values). During transmission, high bytes precede low bytes.

For example: The value 820 should be transmitted.

820 dec = 03 34 hex

4Technical Data... • Data formats

FLOAT

The FLOAT format consists of 4 bytes and is used when ﬂoating

decimal values are to be transmitted. The IEEE 754 format

should be used. The numerical range accepted by the recorder

lies within −9.990E9 and +9.990E9.

For example: transmit the value −12.5.

−12.5 dec = C1 48 00 00 hex

Determination of the hex ﬁgure

The general form of the ﬂoating decimal point is: (sign) ×2Exp−127

×(Rest).

The binary display of the ﬁgure −12.5 is

11000001 01001000 00000000 00000000

Exp Rest

(8 bit) (23 bit)

negative sign

1. Calculate the sign:

the bit is set in case of a negative sign.

2. Calculate the exponent:

the highest exponent is calculated:

EXP = INT [lg”Figuredec”/lg2] + 127

in the example:

INT [lg12.5/lg2] + 127 = 130 dec = 82 hex = 10000010 bi-

nary

3. Calculate the rest:

Rest = “Figuredec”/2Exp

in the example:

12.5/2130 − 127 = 1.562

4. Transform into binary code:

Rank : 20+2

−1 +2

−2 +2

−3 +2

−4 + ... +2−23

In the example: 1 1 0 0 1

The value of 20is always 1 and is therefore not carried for-

ward.

Technical Data ... • Data formats 5

Data transmission

General

A combination of telegram characters is grouped together for the

transmission of data. The telegrams accept the “Handshake

function”, i.e. each telegram from the computer to the recorder

must be ﬁrst conﬁrmed before being sent.

Notice

Prior to data transfer the interface address and the baud rate

must be deﬁned.

Telegram characters

(UART characters or Frame)

Every sign (frame) has 11 bits, a startbit (ST) with “logical 0”

signal, 8 information bits with “logical 0” or “1” signal, an optio-

nal parity bit (P) with “logical 0” or “1” signal and a stopbit (SP)

with logical “1” signal.

0 b1 b2 b3 b4 b5 b6 b7 b8 (P) 1

ST 2021222324252627(P) SP

Permissible address

The recorder only answers queries which use the address set in

the unit as target address. Permissible are values between 0

and 126 (= 7E H). These can be allocated in any manner de-

sired. However, no double addresses may be allocated. The re-

corder does not reply to faulty messages (check sum, wrong

address, other faulty reception). Also, faulty messages are not

acknowledged.

Some data ranges are identiﬁed as “read only” ﬁelds. Attempts

to write into such ﬁelds will be ignored by recorder.

Broadcast address

Messages to the broadcast address (133 dec) are processed by

all recorders, no response is however given to a broadcast

message.

Telegram formats, framework speciﬁcations

The recorder accepts the following types of telegram:

6Data transmision

Telegram SD1

Telegram with ﬁxed information ﬁeld length without data ﬁeld

SD1/DA/SA/FC/FCS/ED

|<-- L -->|

is used for sending a query to the recorder and for sending

acknowledgement by recorder.

Where:

SD1 = 10H

Start byte (start delimiter), code: 10H

DA Target address (Destination Address)

SA Source address (Source Address)

FC Function code (Frame Control)

FCS Test byte (Frame Check Sequence)

Sum of the hex value of the L frame without transfor-

mation for FFH

ED End byte (End Delimiter), code: 16H

L number of bytes in FCS = 3

In reply to a query with FC = 01H (ident-interrogation) the re-

corder will also respond in the SD1 format. If the unit has no

self-test function, the response is in FC = 10H, otherwise it is FC

= 11H.

The ident recognition of the recorder is conducted with the func-

tion code 4EH as follows:

In reply to a query with FC = 4EH the recorder replies with a

message in SD2 format.

The “Data ﬁeld” of the recognition message is assigned as

follows:

LE_VN/LE_CT/LE_HR/LE_SR/VN/CT/HR/SR

LE_VN = 03H

LE_CT = 11H

LE_HR = 05H

LE_SR = 05H

VN = “xxx”

Manufacturer’s code

CT = “41422; xxx”

Catalog number and apparatus

HR = “CPU:A”"

Index of the recorder CPU card

SR = “00.00.16”

Example for software release

Telegram SD2

Telegram with variable information ﬁeld length

SD2/LE/LEr/SD2/DA/SA/FC/aa/oo/oo/cc/data ﬁeld/FCS/ED

|<-- L -->|

is used for sending data to the recorder and for sending replies

from the recorder.

Where:

SD2 = 68H

Start byte

LE Number of data bytes + 7

LEr Repetition of LE

SD2 = 68H

Repetition of start byte

DA Target address (bus subscriber address)

SA Source address

FC Function code:

16H = send data to the recorder

15H = read data from recorder

aa Basic address of the parameter ﬁeld

oo oo 2 byte parameter address (= offset)

cc Number of Datenbytes

data

ﬁeld Data for transmission

FCS Test byte (Frame Check Sequence)

Sum of the hex value of the L frame without transfor-

mation for FFH

ED = 16H

End code

L Number of Bytes in FCS

Upon receiving a data message in SD2 format, the recorder

responds with a message in SD1 format.

The altered data is written into the non-volatile memory after

receipt of the save command.

The function code 16H is used to send data to the recorder. The

recorder uses the function code 15H to send reply telegrams in

SD2 format.

Data transmission 7

Telegram SD3

Telegram with ﬁxed information length

SD3/DA/SA/FC/aa/oo/oo/cc/xx/xx/xx/xx/FCS/ED

|<-- L -->|

is used for sending a query to the recorder.

Where:

SD3 = A2H

Start byte

DA Target address (bus subscriber address)

SA Source address

FC = 15H

Function code

aa Basic address of the parameter ﬁeld

oo oo 2 byte parameter address (offset)

cc Number of data bytes

xx xx

xx xx 4 random bytes

FCS Test byte (Frame Check Sequence)

Sum of the hex value of the L frame without transfor-

mation for FFH

ED = 16H

End byte (End Delimiter), code: 16H

L Number of Bytes in FCS

Transmission rules

The idle state of the line corresponds to the logical “1” signal.

Before data transmission starts − from the PC − a minimum time

of 33 bits (syn-time) as idle state is required for synchronisation.

Pauses of the length ≥3 frames shall be interpreted as telegram

end.

The recorder inserts a pause of ≤300 ms each between the

reception of the last stop bit and the ﬁrst start bit.

Pause between two telegrams:

Telegram Break ≤300 ms Answer telegram

Gaps between two frames:

Frame ≤0,2 ms Frame

The receiver checks

− per frame Start ,stop and parity bit and

− per telegram Start, DA, SA, FCS and end byte.

If the check produces a negative result, the entire telegram

should be rejected as incorrect.

In the reply, the recorder takes over the source address of the

transmitted telegram as target address and inserts its own

address as source address.

8Data transmission • Parameters

Parameters

Addressable parameters

The following parameters can be read or modiﬁed with telegrams

SD2 and SD3 (see corresponding sections on pages 7 and 8).

To be able to do this, a parameter ﬁeld address (see table on

the right), the parameter address (offset, page 10) and the code

of the parameter value are required.

For example

The following information is required for the ﬁrst chart speed:

Parameter ﬁeld address 10H

Parameter address (offset) 0000H

Code for the chart speed 20 mm/h 04H

Parameter ﬁeld address

Instrument function group Parameter field

address

System parameterisation

Parameterisation, channel 1

Parameterisation, channal 2

Parameterisation, channel 3

Parameterisation, channel 4

Parameterisation, channel 5

Parameterisation, channel 6

Text lines

Print intervals

Print synchronisation times

Print colours

DI assignment

Date and time

Calibration data

Measured values and equipment status

Sending measured values to the recorder

Reading accounting data (block transfer)

Writing the equipment status

Sending the print line

Sending the display line to the recorder

Communication error register

10H

11H

12H

13H

14H

15H

16H

17H

18H

19H

1AH

1BH

1CH

1DH

1EH

1FH

20H

21H

F1H

F2H

FFH

The above-named addresses are input into the appropriate ﬁelds

of a message during communication. From the address, the re-

corder determines the data range to be transmitted. The data

transmission takes place with messages in the SD2 and SD3

formats. To read a data ﬁeld, FC = 15H must always be used,

FC = 16H must be used to write a data ﬁeld. If invalid parameter

values are contained in a message, the negative acknowledge-

ment (SD1, FC = 11H) is transmitted by the recorder in reply.

Parameters 9

Parameter addresses

System parameters 10H

Parameter address (Offset) Data type Function Value range and coding

0000H Byte Speed 1 00H = off

01H = 2.5 mm/h

02H = 5 mm/h

03H = 10 mm/h

04H = 20 mm/h

05H = 30 mm/h

06H = 40 mm/h

07H = 60 mm/h

08H = 120 mm/h

09H = 240 mm/h

0AH = 300 mm/h

0BH = 600 mm/h

0CH = 1200 mm/h

0001H Byte Speed 2 as speed 1

0003H Byte Mode 00H = Mode A

01H = Mode B

02H = Mode C

03H = Mode D

04H = Mode E

0004H Word Cycle time of measured value

printout 0003H=3s

...

0168H = 360 s

0006H Byte Delay for exctrenal control 00H...1EH = 0...30 s

0008H Byte Number of event markers 00H = without

01H=1

0AH=10

0009H Byte Date / time format 00H = European

01H = American

000AH Byte Type of simulation 00H = off

01H = Ramp

02H = Sinus

03H = Step (10%)

000BH Word Simulation period 0014..07D0H = 20...2000 s

000DH Time Time for external clock

synchronisation Hour (high byte)

00...23 = 00...17H

Minute (low byte)

00...59 = 00...3BH

000FH Byte Baud rate 00H = 600

01H = 1200

02H = 2400

03H = 4800

04H = 9600

05H = 19200

0010H Byte Device address 0...126 = 00..7EH

0011H Byte Language selection 00H = Scale device

01H = German

02H = English

03H = French

0012H Byte Alarm acknowledgment 00H = off

01H = manual

02H = automatic

10 Parameters

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