25
2522722-01-05/19 (Translation of the original operating instructions)
Operating Instructions
Safety Relay with IO-Link ESM-CB
EN
Device status and error messages
Important!
Ì
If several fault codes are active simultaneously, the error code with the highest priority will dis-
place the other active error codes.
Ì
Error code 0000
Ongoing operation
is permanently active.
Bit 4 … bit 7
Description
Possible cause
Remedy
0111
System error
Internal error
Perform a power-down reset followed by a function test. Replace the device if the error
recurs after the function test.
0110
Input error
Plausibility error in sensor
circuit, short circuits
Check whether the second channel opens on request from the sensor.
Internal error
Perform a power-down reset followed by a function test. Replace the device if the error
recurs after the function test.
0101
IO-Link low voltage
Check the power supply.
0100
ESM-CB low voltage
Check the power supply.
0011
Diagnostic communica-
tion error
One or more safety switches
cannot be reached.
Restart the safety switch chain
0010
Parameter error
Wrong manufacturer’s code of
a switch.
Permanently configured pro-
cess-data size insufficient.
Use only suitable BR safety switches.
Remove the permanent configuration of the process-data size.
0001
Diagnostics active
Internal error
Perform a power-down reset followed by a function test. Replace the device if the error
recurs after the function test.
0000
Ongoing operation
-
-
14.3.2. General description of the process data
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OI
–
–
OR
OM
–
OW
OD
OI General error message
Retrieve the exact error code via an acyclical service.
OR State of the switch’s predecessor
Indicates whether the preceding switch in the series connection has switched on the safety outputs.
OM State of the safety outputs of the switch
Indicates whether the switch has switched on the safety outputs.
OW Actuator weak area
When this bit is set, the actuator is at the edge of the detection area.
OD
Door position
The bit is set when the guard is closed (it does not have to be locked).
Please refer to the manual of the connected interlocking device or guard locking device to determine which bits are actually
used. Not all switches support every bit.
14.3.3. Output data
Byte 0 (IO-Link diagnostic bits/status of ESM-CB)
Bit
Description
Value
0
Enable signal
0: Deactivated (safety contacts blocked)
1: Activated (safety contacts can be closed)
1
Chain reset
A chain reset is performed at the transition from 1 to 0
2 … 7
Reserved
