GE 90-30 PLC Series Installation And Hardware Manual page 209

IC693PCM300/301/311 Programmable Coprocessor Module (PCM)
The Programmable Coprocessor Module (PCM) is a high performance coprocessor for the Series
90-30 Modular CPUs (will not work with Embedded CPU models 311, 313, or 323). The PCM
supports the Modbus RTU and GE CCM protocols, as well as the MegaBasic and C
programming languages. A free program for using this module as an RTU Master can be
downloaded from the GE website. The PCM has two separate ports, both accessed on one
front panel connector.
The PCM is available in three versions. Each version is listed below with the total memory on the
board and the nominal user-available MegaBasic program memory size.
IC693PCM300
IC693PCM301
IC693PCM311
PCM300
COPROC
Figure 8-19. Programmable Coprocessor Module (PCM)
GFK-0356Q Chapter 8 Option Modules
PCM Catalog Number
160K
192K
640K
BD OK
OK
P1 OK
US1
P2 OK
US2
RESTART
BATTERY
PORTS 1 & 2
CONNECTOR
Total Memory User Megabasic memory
35K
47K
190K
8
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