Mitsubishi Electric GT16 User Manual page 242


I/O check operation
(1) Connecting target confirmation
If touch [CPU] button, the connecting target confirmation communication check is carried out.
(2) Self-loopback
If touch [Self], the hardware check of RS-232 interface is carried out.
GT16 Handy
(Rear face)
14 - 16
14. SELF CHECK
14.1 Diagnostic Functions
Connector
conversion box
Self-loopback
check connector
4 3 2
8 7 6
1.
After the CPU communication starts normally, the
dialog box mentioned left notifying that it is on
checking, untill the connecting target confirmation
communication ends normally.
2.
When the connecting target confirmation
communication ends, its result is notified by dialog
box.
If the connecting target confirmation communication
ends normally, the dialog box notifying of the normal
termination mentioned left is displayed.
If touch [OK] button after confirming the result,
returns to [I/O check].
If the dialog box mentioned left is displayed after
selecting connecting target confirmation or during
CPU communication check, confirm the following.
• No misconnection with CPU
( 20. to 64.
• No missettings of parameter
( 12.2 Communication Detail Setting)
• No hardware error.
( 19. TROUBLESHOOTING)
If touch [OK] button in the dialog box After confirming
the result, returns to [I/O check].
1.
For preparation for the self-loopback communication
check, insert the connector for self-loopback check
(Customer purchased) shown in the diagram left in
the RS-232 interface.
For this connector, short 2 and 3 pins, 7 and 8 pins
and 4 and 6 pins, respectively.
In the communication setting of the GOT utility, set
the channel number for the RS-232 interface to 0
([None]).