EUCHNER MGB-LxxB-PNx-xxx (PROFINET) with Data Structure Type B - Manual (Page 9)

Operating Instructions Safety System MGB-L..B-PN.-... (PROFINET)
9
Case B
You have an MGB with a version number of V 2.36.4 and a GSD file with a version
number of ..._110026-20110725 or older.
The guard locking solenoid is controlled if
for MGB-L1...
Ìbit SO 0.0 = 1
for MGB-L2...
Ìbit O 0.0 OR bit SO 0.0 = 1
Truth table:
PROFINET bit PROFIsafe bit Guard locking with
O 0.0 SO 0.0 MGB-L1... MGB-L2...
0 0 active inactive
0 1 inactive active
1 0 active active
1 1 inactive active
What must be observed?
Bit O 0.0 does not have any function with version MGB-L1.... In existing installations
in which old devices are replaced with new ones (e.g. due to defect), malfunctions
can occur if control via bit O 0.0 was programmed in the PLC.
Remedy:
1. Replace the old GSD file with a version from ..._110026-20110815.
2. In the parameter Locking module – solenoid control, activate unsafe control
of the guard locking solenoid via bit O 0.0.
3. Set bit SO 0.0 permanently to the value 1.
¨ The guard locking solenoid is controlled exclusively via bit O 0.0
or
Ìchange the control bit from O 0.0 to SO 0.0 in your PLC program.