Table 5-6 The Status Of Pulse Counter Modules (In I/O Units) Upon - Hitachi HSC-2100 Hardware Manual

(4) The status of counter modules (in I/O units) upon power-up of the CPU unit
Table 5-6 shows the status of pulse counter modules, installed in I/O units, that occurs
immediately after the power to the CPU unit used with them is tuned on.

Table 5-6 The Status of Pulse Counter Modules (in I/O Units) upon

Module model
Power to CPU unit
Module
Preset value
Internal
Comparison
registers
value
Count value
R<C
Comparison
R=C
output
R>C
R>C
LED R=C
indication
R<C
(*1) These counter modules are used with the station module's output hold terminals (HOLD and COM) shorted.
(*2) These counter modules are used with the station module's output hold terminals (HOLD and COM) left open.
(*3) This normal operation proceeds according to the control code that was present immediately before the CPU unit
has been powered up.
Power-Up of the CPU Unit
LWC400
Off Powered up
Operating Operating
normally (*3) normally
Same as Same as
above above
Same as Same as
above above
5 MAKING USE OF MODULES
LWC401 & LWC402 (*1)
Off Powered up
Operating Operating
normally (*3) normally
Same as Same as
above above
Same as Same as
above above
5-23
LWC401 & LWC402 (*2)
Off Powered up
Counting Operating
stopped normally
Same as
Cleared
above
Held
Cleared
Held
Off
Held
Held
Off
Same as
Held
above