72 • Fieldbus Coupler 750-337, 750-338
LED
Display
WAGO-I/O-SYSTEM
750
CANopen
Fault code 11: "Fault with Modules with Mailbox functionality"
Fault argument
Fault description
Trouble shooting
Maximum number of Modules
with Mailbox functionality ex-
ceeded
Turn off the power supply of the
node, reduce number of Modules
with Mailbox functionality and
turn the power supply on again.
Note
For Couplers with the Firmware version 10 to 15, 3 Mod-
ules with Mailbox functionality are possible, starting with
the Firmware version 16, 8 Modules with Mailbox func-
tionality are supported.
1
Attention
Please pay attention to
the delimitation by the size of the
process image, while configurating a node with analog I/O
modules and Modules which have the Mailbox functional-
ity.
Dependent on the complete configuration of all I/O mod-
ules of a node can, in particular with the employment of the
AS interface master (up to 48 byte data width), in some
cases already rather be reached the internal border.
This error can thus also occur, if the maximum process
image size is not yet reached.
2
Maximum size of Mailbox ex-
ceeded
Reduce the Mailbox size.
3
Maximum size of process image
exceeded due to the put Modules
with Mailbox functionality
Reduce the data width of the Mod-
ules with Mailbox functionality.
* The number of blink pulses (n) indicates the position of the I/O module. I/O modules
without data are not counted (e.g. supply module without diagnosis)
Example: the 13
th
I/O module is removed.
1.
The "I/O" LED generates a fault display with the first blink sequence (approx. 10 Hz).
2.
The first pause is followed by the second blink sequence (approx. 1 Hz). The "I/O"
LED blinks four times and thus signals the fault code 4 (internal bus data fault).
3.
The third blink sequence follows the second pause. The "I/O ERR" LED blinks
twelve times. The fault argument 12 means that the internal bus is interrupted after the
12
th
I/O module.
3.1.7.3 Supply Voltage Status
LED
Color
Meaning
A
green
Status of the operating voltage – system
B or C
green
Status of the operating voltage – power jumper contacts
(LED position is manufacturing dependent)
There are two green LED’s in the coupler supply section to display the supply
voltage. The LED A (left above) indicates the 24 V supply for the coupler.
