Page 11
688 Manual
Rack Socket
The most likely cause of a non-permit situation is a bad rack socket
connection. For a thermistor rack, if the diagnostic LED is on in the
controller, then the socket connection is good. For an optic rack,
the pulse input and output are not monitored (since the pulse
width is so small, the LEDs would not be visible), so even though
the LED is on there may still be a connection problem.
Summary of Contents for MULTIRACK 688-S
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