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Programmable Coprocessor Module Restrictions PACSystems RX7i CPUs with firmware versions 1.50 or later support IC697PCM711 modules with firmware versions 4.05 or later. You must ensure that you are using the correct firmware version of the PCM because the CPU cannot check the PCM’s firmware version. (The module’s firmware version can be found on a label attached to the EEPROM.) PACSystems does not support the following for IC697PCM711: ■ Connecting CIMPLICITY Machine Edition to the CPU through the IC697PCM711 module’s serial ports. ■ Access to Symbolic variables. ■ WAIT mode COMMREQs. ■ The following C functions are not supported: chk_genius_bus chk_genius_device get_cpu_type_rev get_memtype_sizes get_one_rackfault get_rack_slot_faults ■ The C function write_dev will not write to read only reference tables (%S references, transition bits, and override bits). If this is attempted, the call will fail at run time and return an error code. The following restrictions apply when using the IC697PCM711 with PACSystems: ■ %W memory partially supported. Only offsets 0-65535 of %W can be accessed via the PCM. ■ The Program Name is currently always LDPROG1 for PACSystems. ■ In case of ERROR NACK, the Control Program number, privilege level and other piggyback status data will be set to 0. ■ If an application program running on the PCM accesses the VME bus, the VME addresses being used by that program must be updated to agree with the PACSystems RX7i VME addressing assignments. PACSystems RX7i VME address assignments are described in the PACSystems RX7i User’s Guide to Integration of VME Modules, GFK-2235. ■ PACSystems CPUs return the major/minor type of the Series 90-70 CPX935 (major type 12, minor type 35) to the PCM scratch pad memory when communicating with a PCM. ■ If your RX7i application program needs to access the PCM’s dual port memory, use the BUS READ and WRITE functions. When accessing the PCM, set the Region parameter on the function block to 1. (For the PCM, region 1 is predefined to be the module's entire dual port memory.) Note: For details on operation of the IC697PCM711, refer to the Programmable Coprocessor Module and Support Software User’s Manual, GFK-0255.