INTRODUCTION
WBPEEUI240752A0
5 - 1
SECTION 5 - TROUBLESHOOTING
INTRODUCTION
This section explains the error indications and corrective
actions for the IMDSI1
Digital Input (DSI) module.
ERROR INDICATIONS AND CORRECTIVE ACTION
You can obtain the status of the DSI by checking the control
module for good quality on its input blocks. Use any INFI 90
OPEN operator interface (e.g., Operator Interface Station,
Engineering Work Station, Configuration and Tuning Termi-
nal) to do this.
NOTE: If you look at the DSI front panel input status LED indicators
and there are no LEDs lit, this may indicate a faulty DSI (an input
must be energized to light an LED). Check the control module for
bad quality on its input blocks.
CONTROL MODULE ERRORS
The address set on address switch S1 and in the control mod-
ule configuration must be the same. The control module gener-
ates a MISSING SLAVE MODULE error if they do not match.
Verify that the address set on switch S1 is the same as the
address in Function Code (FC) 84 specification S1. If not:
1. Remove the module and change the setting of S1 to corre-
spond with the module configuration. Refer to the
in Section 3 for the procedures to set an address and to
install a digital input module.
- or -
2. Modify the address in the module configuration (FC 84
specification S1) to correspond with the address set on S1. Use
an INFI 90 OPEN operator interface to modify the configura-
tion. For procedures on how to modify a function code specifi-
cation, refer to the instruction manual for the operator
interface being used (Table
The control module generates a MISSING SLAVE MODULE
error if the I/O expander bus is not connected between the
WARNING
Disconnect power before installing dipshunts on the MMU
backplane. Failure to do so will result in contact with cabinet
areas that could cause severe or fatal shock.
