National Instruments FieldPoint FP-1000 Operating Instructions Manual
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.
This document provides a quick guide to installing and configuring
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.
FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names are
trademarks or trade names of their respective companies.
321697A-01
©
Copyright 1997 National Instruments Corp. All rights reserved. July 1997
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.
Rail Clip LockedRail Clip Unlocked
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.
Local Bus
over
Press
Connector
DIN Rail
Figure 2.
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.
Installing the Network Module onto a DIN Rail
2
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.
Local Bus Connectors
Firmly Mated
Protective
Cover
Rail Snap
Locked
DIN
Rail
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-tofemale “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.
3
GND
NC
RX
TX
NC
54321
9876
NC
Legend:
NC = Not Connected
GND = Ground
RX = Recieve
RTS
NC
DSR
TX = Transmit
RTS = Request to Send
DSR = Data Set Ready
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
additional FP-1001 modules as if it were an RS-485 port of the host
computer. The pinout of the RS-485 connector is shown in
Figure 5.
RX+
RX–
GND
TX–
TX+
12345
Figure 5. RS-485 Connector Pinout
The TX+ of the FP-1000 must be connected to the RX+ of all of 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.
The RX+ of the FP-1000 must be connected to the TX+ of all of 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.
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