Communication Coprocessor Module restrictions PACSystems RX7i CPUs with firmware versions 1.50 or later support IC697CMM711 modules with firmware versions 4.20 or later. You must ensure that you are using the correct firmware version of the CMM because the CPU cannot check the CMM’s firmware version. (The module’s firmware version can be found on a label attached to the module’s EEPROM.) PACSystems does not support the following for an IC697CMM711:
Connecting to Machine Edition to the CPU through the CMM’s serial ports.
Access to Symbolic variables memory.
WAIT mode COMMREQs.
Permanent datagrams. The following restrictions apply when using the IC697CMM711 with PACSystems:
Access to %W memory references is partially supported. Only offsets 0—-65535 of %W can be accessed via the CMM.
The Program Name is currently always LDPROG1 for PACSystems.
Reads and writes beyond currently configured reference table limits will report a minor code error of 90 (REF_OUT_OF_RANGE) instead of F4 (INVALID_PARAMETER) as reported on the Series 90-70.
In case of ERROR NACK, the Control Program number, privilege level and other piggyback status data will be set to 0.
PACSystems CPUs return the major/minor type of the 90-70 CPX935 (major type 12, minor type 35) to the CMM scratch pad memory when communicating with a CMM.
Control Program Number will be returned as 01 in PACSystems instead of FF as reported on the Series 90-70.
If your RX7i application program needs to access the dual port memory of a CMM, use the BUS READ and WRITE functions. When accessing the CMM, set the Region parameter on the function block to 1. (For the CMM, region 1 is predefined to be the module's entire dual port memory.) Note: For details on operation of the IC697CMM711, refer to the Serial Communications User’s Manual, GFK-0582.
When accessing the CMM, set the Region parameter on the
function block to 1. (For the CMM, region 1 is predefined to be the
module's entire dual port memory.)
Note: For details on operation of the IC697CMM711, refer to the
Serial Communications User’s Manual, GFK-0582.
