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Default System Tags
Note: Please do not attempt to modify read only system tags in the ladder. This could affect the functionality of
the product.
System Registers / Coils:
Register / Coil
Tag
Name Read / Write Description
SW0003_14 COM1 Status Read Only 0 = Communication Error; 1= Communicating
with PLC
0 = Communication Error; 1= Communicating
with PLC
Overflow indication in math operations of ladder
and also used in rotate with carry instruction.
RTC day in integer format
RTC month in integer format
RTC year in integer format
RTC hour in integer format
RTC minute in integer format
RTC sec in integer format
RTC day of week in integer format
Value is in multiple of 0.1 mSec. This includes
execution time for reading inputs, executing
tasks, executing ladder, update outputs, etc.
(Refer flow chart)
0=valid date 1= Invalid date
COM1 failed node reconnect
time (Sec)
Shows time in sec recover the communication
with failed nodes for port1.the default value is
COM2 failed node reconnect
time (Sec)
Shows time in sec recover the communication
with failed nodes for port1.the default value is
60Sec
COM3 failed node reconnect
time (Sec)
Shows time in sec recover the communication
with failed nodes for port3.the default value is
COM1 failed node reconnect
control
If this bit is set communication with the failed
nodes is detected after scan time SW0018 for
port1.By default : ON
COM2 failed node reconnect
control
If this bit is set communication with the failed
nodes is detected after scan time SW0019 for
port2.By default : ON
COM3 failed node reconnect
control
If this bit is set communication with the failed
nodes is detected after scan time SW0022 for
Node Status Registers for
COM1
Shows the status of the node, whether node is
present or
not.
Total 2 word Register are mapped
for 32 nodes.
Node Status Registers for
Shows the status of the node, whether node is
COM2 present or not. Total 2 word Register are
Node Status Registers for
COM3
Shows the status of the node, whether node is
present or
not.
Total 16 word Register are
mapped for 256 nodes.
(Not applicable for non-Ethernet models)
