PC3000 Complete Installation guide iss 12 - Elektro-Trading

Local Controller Plus Module
6-2
Type Code
Local Controller Module PC3000/LCM-PLUS/VERSION3/NOMEM/NOMEM/312
Plus fitted with 512K of
RAM.
Local Controller Module PC3000/LCM-PLUS/VERSION3/512KRAM/512KRAM/312
Plus fitted with 1536K of
RAM.
Local Controller Module PC3000/LCM-PLUS/VERSION3/NOMEM/128KRAM/312
Plus fitted with 512K
plus 128K for storage
of source program
Connections to serial ports
All serial communication connections including the extension rack interface are
made via high density, latching, shielded connectors.
LCM serial ports A, B or C and extension
rack connector
Pin Number RS232
Operating Mode
RS485 RS485
2-wire 4-wire
1 Rx N/A N/A
2 Tx N/A N/A
3 N/A Rx/Tx- Tx-
4 N/A Rx/Tx+ Tx+
5 N/A N/A Rx-
6 N/A N/A Rx+
7 0V 0V 0V
8 0V 0V 0V
Cable screen Rack earth Rack earth Rack earth
8
7
6
5
Notes
1. The RS232 connections on the
LCM-Plus differ from those on the version 2 ICMs.
2. RS232 is not available on Port C, as there are no connections to Port C's pins 1 and 2.
3. The connection system automatically connects the cable screen to the LCM's case, and
hence to the rack.
4. In 4-wire RS485 mode the receive pair may be exchanged with the transmit pair on
Port A using links on the PCB.
A range of cable assemblies is available from Eurotherm Controls to allow direct connection
to a variety of standard devices. A list of available cable types may be found in the PC3000
Technical Summary (HA022230)
4
3
2
1
A
B
C
EXT
RACK
PC3000 - Installation Guide