HEIDENHAIN IOB 49 - Manual (Page 15)

HEIDENHAIN IOB 49 15
I – 3 Diagnostics
I – 3 Diagnostics
When the IOB 49 is connected to the ND 780, the DIAGNOSTICS
menu under INSTALLATION SETUP provides further diagnostic
possibilities. The information available varies depending on the
configuration of the system (CSS or switching I/O functions).
Switching I/O functions
The SWITCHING I/O DIAGNOSTICS shows the status of the
communication via the CAN bus and the state of the switching inputs
and outputs to provide monitoring of the switching functions.
 The CAN STATUS field shows the state of the bus communication
between the position display unit and the IOB 49.
The status information has the following meaning:
 The SWITCHING I/O field shows the state of the inputs and the
switch position of the relays.
All currently active inputs (1 to 3) are shown in the ON field.
All currently active relay outputs (1 to 9) are shown in the OFF field.
The CALIBRATE soft key is used to re-synchronize the communication
with the IOB 49. This, however, is only required if the module is not
detected upon power on.
Information Meaning
NOT PRESENT No communication with hardware
NOR Communication – normal operation
CAL Communication – Hardware in calibration
mode
Wen Watchdog active
Wds Watchdog inactive
Wto Watchdog time-out
Tx Data is transmitted to hardware
Rx Data is received by hardware