Plc Setup Settings; Startup Operation Settings - Omron CJ2 - 02-2010 User Manual

9-3

PLC Setup Settings

9-3-1

Startup Operation Settings

Startup Hold Settings
Forced Status Hold Bit Startup Hold Setting
Use this parameter to set whether to retain the Forced Status Hold Bit (A500.13) in the Auxiliary
Area at startup.
Parameter
Forced Sta- OFF: Cleared
tus Hold Bit
ON: Retained
Startup Hold
Setting
• Relation between Forced Status Hold Bit at Startup and this Parameter
The Forced Status Hold Bit (A500.13) can be turned ON to retain the forced status of all bits that
have been force-set or force-reset when the CPU Unit's operating mode is switched between PRO-
GRAM mode and MONITOR mode. When the PLC is turned ON, the Forced Status Hold Bit itself
will be turned OFF unless it is protected with this PLC Setup parameter setting.
If the Forced Status Hold Bit Startup Hold parameter is set to ON, the status of the Forced Status
Hold Bit will be protected when the PLC is turned ON. If this parameter is set to ON and the Forced
Status Hold BIt itself is ON, all force-set and force-reset bits will retain their forced status when the
PLC is turned ON.
If the memory is not retained because the battery voltage is low, the Forced Status Hold Bit will be
cleared whether this parameter is set to ON or OFF.
CJ2 CPU Unit Software User's Manual
Settings Default
OFF
Function
This setting determines whether the status of
the Forced Status Hold Bit (A500.13) is
retained at startup.
9 PLC Setup
Related flags
9
and words
A500.13
(Forced Sta-
tus Hold Bit)
9-5