3BSC980006R361 Analog card

This section explains the error indications and corrective actions for the Control I/O Slave (CIS) module. ERROR INDICATIONS AND CORRECTIVE ACTION You can obtain the status of the CIS through an Infi 90 operator interface (e.g., Operator Interface Station, Engineering Work Station, Configuration and Tuning Terminal) or the front panel module status LED indicator. Status LED The front panel status LED has three states to indicate normal operation and error conditions. Table 5-1 lists CIS status LED states, error indications, probable causes and corrective actions. NOTE: If the corrective actions in Table 5-1 do not correct a problem with the CIS module, replace the slave module.Dipshunt not properly installed between MFP and slave module Verify dipshunt is installed properly (no bent pins) in slave expander bus socket on MMU backplane between MFP and slave module

 Module not completely inserted in MMU

 Verify module is completely inserted in MMU: faceplate flush with MMU and captive retaining screws latched Red Bus fault timer error (time-out) Slave expander bus clock failure Check MFP for proper operation Dipshunt not installed between MFP and slave module Verify dipshunt is installed in the slave expander bus socket on the MMU backplane between MFP and slave module The MFP generates an ANALOG INPUT REFERENCE ERROR if the CIS reference voltages (1 VDC and 5 VDC) used to calibrate the analog input zero offset and gain are not within tolerance or the analog inputs are not within CIS tolerance.

Master Module Errors

 The Multi-Function Processor (MFP) performs status checks on the CIS. An error will appear in the report function of an operator interface. Refer to the Product Instruction for the operator interface you are using for an explanation of these reports. Function Code (FC) 79 output block N+9 in the MFP configuration is the CIS status flag (logic 0=good; logic 1=bad). You can use an operator interface to monitor this block. If the status flag is a logic 1, check the front panel module status LED and the operator interface report function to determine corrective actions. NOTE: If FC 79 specification 19 is set to 0, the MFP will trip when the CIS module fails or the analog input reference voltages are out of tolerance. Changing specification 19 to a 1 will allow the MFP to continue to operate if any CIS error condition exists.

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