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General Differences All of the P+F I/O modules have fewer I/O channels than their analogous I/A Series FBM types. Refer to Table 1-4 and Table 1-6, which list the number of channels for each I/O module. The EEPROM and software versions displayed for the P+F I/O modules are inherited from the ISCM which are most likely to be different than the EEPROM and software versions of the equivalent 200 Series FBMs. For example, at this writing the current version of FBM 201 is 1.40D whereas the version of the ISCM is 2.40. To avoid confusion, the P+F I/O modules display 201i 2.40 to distinguish them from 200 Series FBMs. In addition, the Hardware Part field displays a partial P+F model code such as LB 3x04. Refer to Figure 5-4 on page 102 which shows this example. Do not perform the “EEPROM update” command on the P+F I/O modules, as doing so will not change their software version and will take the modules off-line for the same time that it would take for the EEPROM update to complete. However, if EEPROM update is invoked, it will do no harm to the ISCM or the I/O module. If it desired to bring all of the I/O modules on line by the use of the General Download pick on the Control Processor's FBM0 Equipment Change Action (available through SMDH or the System Manager), you must first turn all of the ISCMs on-line before selecting this action, or as an alternative, use General Download to bring the ISCMs on-line and then invoke the action a second time to bring the I/O modules on-line. Line Fault Detection and Bad I/O Alarming Many of the P+F I/O modules have line fault detection, which can indicate any of the following conditions: Analog current input below 0.5 mA or above 22 mA Analog output current loop is open Digital input open or short circuit Digital output open or short circuit Thermocouple is burned out Thermocouple CJC input is open Each of these conditions is detected by the I/O module, which turns on a red LED on its front to indicate the condition. In addition, this condition is reported to the I/A Series system by the setting of the BAD I/O bit for that channel. When this bit is set, the following indications can be seen at the I/A Series block and system level: The I/O point block display (faceplate) highlights the point value in RED, regardless of any block configuration options. If the BAO option is configured in the I/O block, the block generates a process alarm and indicates IOBAD on the faceplate. If the BADALM parameter 0x01 bit is set in the PRIMARY_ECB for the CP, this causes the fault to generate a system alarm and the FBM icon representing the I/O