National Instruments FieldPoint FP-1000 Manual de usuario

FieldPoint

™

is a trademark of National Instruments Corporation. Product and company names are

trademarks or trade names of their respective companies.

321697A-01

FP-1000

FieldPoint RS-232 Network Module

Highlights

• RS-232 interface to host computer

• Built-in isolated RS-485 repeater to connect to FP-1001

network modules

• Compatible with industry standard Optomux protocol

• Runs on 11 to 30 VDC power

• Built-in high efficiency power supply powers I/O modules

• -40° to +70° C operation

Overview

The FP-1000 is a network module for the FieldPoint system. It

provides connection to an RS-232 network using a simple ASCII

protocol. In addition, it has an isolated RS-485 repeater built in to

transparently add up to 24 FP-1001 network modules to the same

host computer serial port.

Thisdocumentprovidesaquickguidetoinstallingandconfiguring

the FP-1000 network module. For more detailed information on

using the network module, refer to the FP-1000/1001 user manual.

For information on the ASCII protocol used by the network

module, refer to the FP-1000/1001 programmer reference manual.

FP1000.fm Page 1 Thursday, July 31, 1997 8:49 AM

DIN Rail Mounting

NOTE: Terminal bases must be connected to the network

module before applying power to the module. Do not connect

or disconnect terminal bases while power is applied to the

network module.

The FP-1000 has a simple rail clip for mounting reliably onto a

standard 35 mm DIN rail. To install the FP-1000 to the DIN rail,

follow these steps:

1. With a flat bladed screwdriver, open the rail clip to the

unlocked position as shown in Figure 1.

Figure 1. DIN Rail Clip

2. Hook the lip on the rear of the FP-1000 onto the top of a 35 mm

DIN rail and press the FP-1000 down onto the DIN rail as

shown in Figure 2.

Figure 2. Installing the Network Module onto a DIN Rail

3. Slide the FP-1000 to the desired position along the DIN rail.

After the FP-1000 is in position, lock it to the DIN rail by

pushing the rail clip in.

Rail Clip LockedRail Clip Unlocked

Press

DIN Rail

over

Local Bus

Connector

FP1000.fm Page 2 Thursday, July 31, 1997 8:49 AM

4. Add terminal bases to the DIN rail with their local bus

connectors firmly mated to the FP-1000 local bus connector.

The FP-1000 is shipped with a protective cover over the local

bus connector. Remove this protective cover, and place it over

the local bus connector of the last terminal base in the stack.

Figure 3 shows an installed FP-1000 network module.

Figure 3. Installed Network Module

Network Connection

Connect the FP-1000 to a host computer using the 9-position DSub

RS-232 connector on the FP-1000. Connect the RS-232 port of the

FP-1000 to the RS-232 port on your computer using a male-to-

female “straight-through” cable. Do not use a “null modem” cable

(usually female-to-female). For reference, the pinout of the

RS-232 connector on the FP-1000 is shown in Figure 4.

Protective

Cover

Local Bus Connectors

Firmly Mated

Rail Snap

Locked DIN

Rail

FP1000.fm Page 3 Thursday, July 31, 1997 8:49 AM

Figure 4. RS-232 Connector Pinout

Up to 24 additional FP-1001 network modules can be connected to

this FP-1000 module by using the built in RS-485 repeater. This

repeater makes the RS-485 port of the FP-1000 appear to the

additionalFP-1001modules as if it were an RS-485 portofthe host

computer. The pinout of the RS-485 connector is shown in

Figure 5.

Figure 5. RS-485 Connector Pinout

TheTX+oftheFP-1000mustbeconnected to the RX+ofallof the

FP-1001 modules, and the TX- of the FP-1000 must be connected

to the RX- of all of the FP-1001 modules. This pair of connections

provides communication from the host computer, through the

FP-1000, to the FP-1001 modules.

TheRX+ of the FP-1000mustbeconnected to the TX+ofallof the

FP-1001 modules, and the RX- of the FP-1000 must be connected

to the TX- of all of the FP-1001 modules. This pair of connections

provides communication to the host computer, through the

FP-1000, from the FP-1001 modules.

GND

RTS

DSR NC

54321

9876

NC = Not Connected

GND = Ground

RX = Recieve

TX = Transmit

RTS = Request to Send

DSR = Data Set Ready

Legend:

RX–

RX+

TX–

TX+

GND

12345

FP1000.fm Page 4 Thursday, July 31, 1997 8:49 AM

These connections are shown in Figure 6.

Figure 6. Typical Signal Connections with One FP-1000 Connected to

Multiple FP-1001 Network Modules

Figure 6 also shows the use of 120 Ohm termination resistors. An

RS-485network must beterminatedat each endofthenetwork, but

not anywhere else. Termination resistors should be installed

between the RX pair and between the TX pair of the FP-1000

RS-485 port. Termination resistors should also be installed on the

RS-485 port of the last FP-1001 on the network. A pair of

terminating resistors are provided with each network module. To

install them, twist the resistor leads with the RS-485 signal wires

and insert them into the RS-485 port terminals.

Setting the Address and Baud Rate

Figure 7 shows the 8-position switch on the FP-1000 network

module. Switches 1-5 set the network address, and switches 6-8 set

the baud rate. Every network module connected to one serial port

of the host computer must be given a unique address, however

moduleson different serialportsmay have thesameaddress.Every

module on one serial port of the host computer must have the same

baud rate.

Switches 1-5 set the network address of the FP-1000. The

addresses of the terminal bases connected to the network module

are automatically configured to be sequentially higher than the

network module’s address. For example, if the network module is

set to address 20, the I/O module in the terminal base immediately

connected the network module is at address 21, the next I/O

To Host

Computer's RS-232

Receive Input

From Host

Computer's RS-232

Transmit Output

Ground

FP-1001 FP-1001 FP-1000

120Ω

TX RX

RX TX

120Ω

Connect the TX outputs of the FP-1001 to the RX inputs of the FP-1000,

and the RX inputs of the FP-1001 to the TX outputs of the FP-1000.

FP1000.fm Page 5 Thursday, July 31, 1997 8:49 AM

module is at address 22, and so on. A terminal base is assigned a

network address whether an I/O module is inserted into it or not.

Figure 7. Address and Baud Rate Switch

Table 1 shows the possible switch positions and the corresponding

address of the FP-1000.

Table 1. Network Address Switch Settings

Switch

Positions 1-5 Network Module

Address (Decimal) Switch

Positions 1-5 Network Module

Address (Decimal)

0130

10 140

20 150

30 160

40 170

50 180

60 190

12345678

Address Baud

Rate

Switch Cover

(Removed)

12345678

12345678 12345678

12345678

FP1000.fm Page 6 Thursday, July 31, 1997 8:49 AM

Switches 6-8 set the baud rate of the FP-1000. Table 2 shows the

switch positions and the corresponding network baud rates.

70 200

80 210

90 220

100 230

110 240

120 Other Settings Not Allowed

Table 2. Baud Rate Switch Settings

Switch

Positions 6-8 Network Module

Baud Rate Switch

Positions 6-8 Network Module

Baud Rate

300 19200

1200 38400

2400 57600

9600 115200

Table 1. Network Address Switch Settings (Continued)

Switch

Positions 1-5 Network Module

Address (Decimal) Switch

Positions 1-5 Network Module

Address (Decimal)

12345678

12345678 12345678

12345678

12345678 12345678

FP1000.fm Page 7 Thursday, July 31, 1997 8:49 AM

Powering the FP-1000

NOTE: Terminal bases must be connected to the FP-1000,

and the baud rate switch must be set, before power is applied to

the FP-1000.

An 11-30 VDC power supply is required by each FieldPoint stack.

The network module filters and regulates this supplied power and

provides power for all the I/O modules in the stack. Therefore you

need not provide power separately to each FieldPoint I/O module

in the stack. If your field I/O device needs to be powered

separately, you can use the terminals provided on each terminal

base for such power supply connections.

The power connector is a 4-pin screw terminal connector whose

pinout is shown in Figure 8.

Figure 8. FP-1000 and FP-1001 Power Connector Pinout

The two terminals labeled V are internally connected on the

networkmodule, as are the two terminalslabeled C. Power must be

applied to one V and C pair for operation of the FieldPoint system.

If you want to power your field I/O devices from the same power

supply, the second V and C pair provides a convenient means of

connecting power to the V and C terminals of a terminal base.

Figure 8 shows this optional connection.

–

To Adjacent Terminal Base

(Optional Connection)

11-30 VDC

FP1000.fm Page 8 Thursday, July 31, 1997 8:49 AM

Specifications

Network ports ...................................1 RS-232 port, 1 RS-485

repeater port

Baud Rates........................................300, 1200, 2400, 9600,

19200, 38400, 57600,

115200 (switch selectable)

Communication parameters..............1 start bit, 8 data bits,

1 stop bit, No parity

RS-485 isolation ...............................2500 Vrms breakdown,

250 Vrms operational

Power Consumption..........................1 W + 1.15 * ∑(I/O module

power requirements)

Operating Temperature.....................-40° C to +70° C

Storage Temperature.........................-55° C to +100° C

Relative Humidity.............................5% to 90% non-condensing

Weight...............................................250 g (8.7 oz.)

CE Mark Compliance

This product meets applicable EU directive(s) as follows:

Safety isolation ................................EN 61010 (double insulation

for 250 Vrms working

isolation, installation

category II)

EMC Directive

Immunity....................................EN 50082-1:1994

Emissions ..................................EN 55011:1991 Group I

Class A at 10 meters

FP1000.fm Page 9 Thursday, July 31, 1997 8:49 AM

Mechanical Dimensions

Figure 9 shows the mechanical dimensions of the FP-1000.

Figure 9. Mechanical Dimensions

4.31

[109.5]

3.58 [90.9]

4.19 [106.4]

FP1000.fm Page 10 Thursday, July 31, 1997 8:49 AM

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