4
6053/6055 Modbus Plus Communications Interface
Understanding the LED Indications
Network LED
Indicates the state of the connected
network.
The states indicated are those produced
by the PEER STATUS parameter of the
TechBox function block.
Module LED
Indicates the set-up state of the TechBox.
The states indicated are those produced
by the FAULT parameter of the TechBox
function block.
Network LED
Indication
PEER STATUS
Parameter
Module LED
Indication
FAULT Parameter
ON
0 NORMAL
LINK
ON
0 NONE
LONG FLASH
1
DUP STATION
LONG FLASH
1 PARAMETER
FLASH
2 ONLY
STATION FLASH
2 TYPE
MISMATCH
FLASH
3
NO TOKEN
SHORT FLASH
3 SELF
TEST
SHORT FLASH
4 MONITOR
LINK
4
HARDWARE
5 INITIALISING
OFF
5 MISSING
OFF
6 DISABLED
Figure 4. LED Status Indication
Note:
Note: The NETWORK LED is always in the OFF state when the MODULE LED is not ON
continuously. This indicates that the TechBox is not receiving external communications or
the PLC is off.