turck BL20 Series - 6.2.2 Diagnostic and status messages; 6.2.3 Base modules

39
2020/09
6.2.2 Diagnostic and status messages
The diagnostic functions monitor the supply voltages (system and field supply) supplied by the user
for undervoltage. The diagnostic functions indicate errors via the ”DIA” LED and transmit the corre-
sponding diagnostic information to the gateway.
LED status displays
Diagnostics
This module has the following diagnostic data per channel:
 ”No field voltage”
Monitoring of the external power supply to the field
6.2.3 Base modules
LED Display Meaning Remedy
DIA Red,
flashing
0.5 Hz
Diagnostics pending Check the wiring to the field power supply. Check if the
voltage for the field supply is within the permissible
range.
Red Module bus communi-
cation failure
Check if more than two ad-joining electronics modules
have been pulled. Check the supply of the module bus.
Off No error messages or
diagnostics
–
U
L
Green Field power supply via
external power supply
unit OK
–
Off Field power supply via
external power supply
unit faulty
Check the wiring to the field power supply. Check the
external power supply unit.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
- - - - - No field voltage - -
Fig. 28: Base module BL20-P3T-SBB