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  • IDEC PF3S-PSA2 Output interface module
  • IDEC PF3S-PSA2 Output interface module
  • IDEC PF3S-PSA2 Output interface module
IDEC PF3S-PSA2 Output interface module IDEC PF3S-PSA2 Output interface module IDEC PF3S-PSA2 Output interface module

IDEC PF3S-PSA2 Output interface module

IDEC PF3S-PSA2 Output interface module

The PCM has a default backplane communications timeout value of 5 seconds. After the PCM has sent a request to the CPU, the PCM applies this timeout while waiting on a response back from the CPU. In most cases, the CPU will respond well within the 5–second timeout; however, in certain instances the CPU can take longer than 5 seconds to respond. These cases are limited to LOADs or STOREs of program and/or configuration -especially if blocks in the program are larger than 8 KBytes. Folders containing EXE blocks (again with *.EXE files >8 KBytes) are most likely to cause problems. To ensure that the PCMs do not observe backplane timeouts, a file must be loaded (using termf) to the PCM. The file must be a binary file named CPU.ENV. The contents of this file are as below (all values are specified in hexadecimal): Once the binary file CPU.ENV (below) is created, use termf to load CPU.ENV to the PCM. Then execute a soft reset of the PCM. After executing the soft reset, the PCM’s backplane communications timeout should be 10 seconds.

PACSystems RX7i CPUs 

with firmware versions 1.50 or later support DLAN Interface, IC697BEM763 modules with firmware versions 3.00 or later. You must ensure that you are using a valid version of the DLAN firmware because the CPU cannot check the DLAN’s firmware version. (The module’s firmware version can be found on a label attached to the EEPROM.) If your RX7i application program needs to access the DLAN’s dual port memory, use the BUS READ and WRITE functions. When accessing a DLAN module, set the Region parameter on the function block to 1. (For the DLAN module, region 1 is predefined to be the module's entire dual port memory.) The DLAN is only supported in the main RX7i rack. It is not supported in expansion racks. Note: The DLAN Interface module is a specialty module with limited availability. If you have a DLAN system, refer to the DLAN/DLAN+ Interface Module User’s Manual, GFK0729 for details.

Backplane Comm window Setting and Genius Redundancy

 When using Genius Redundancy, do not set the backplane communications window timer to 0. Also be sure to allow enough time for the backplane communications window to run when using Constant Sweep mode. Ample backplane communications window time must be available for the GBCs to exchange information about Genius devices that are lost and added. Expansion Rack ID Series 90-70 expansion racks are shipped with the rack ID strapped for rack 0 (the main rack). If the rack jumper is not changed the PLC CPU will not recognize the rack at all and may not properly identify the error. Expansion Rack Cable Connection and disconnection of an expansion rack cable while the CPU is running should not be attempted. This will cause the PLC to go to the STOP/HALT state

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