KEYENCE DV-90 - Manual (Page 213)

9-13
9
E DV-90-IM
PLC Link
9-2 Device Assignment
„ DM that checks the current operation status
• The current operation status of the DV-90 can be checked.
• “0: Non-access state” is generated when PLC link communication cannot be established at
power-on, and the value of “X+17” in the PLC has not changed from the initial value “0”.
(“X+17” should be initialized to “0” when launching the program.) However, commu-
nication errors such as that caused by a cable breakage cannot be checked after communication
has been established.
DM Description Data description
Writing from
the DV-90
Writing from
the PLC
X+17 Operation Status Check Area
0: Non-access state
1: During normal operation
2: During another operation
3: Interlocked
4: Work standby
Yes No
Data description Description
0: Non-access state • State where the PLC link communication is not established.
1: During normal operation • Operating in the verification mode
2: During another operation
• Operating in the operation mode other than the verification mode
• State where the send buffer over or receive buffer over has occurred in
the verification mode
3: Interlocked • State where interlock is imposed.
4: Work standby • State where “X+00 Work Start Flag” is not set to “1: Work start”.