117
APPENDIX B: Quick Reference (Direct Commands and Display Codes)
Service required
All LEDs flash
Fatal error
Service required
All LEDs flash
RAM error
Service required
All LEDs flash
I/O error
MPS-VII returns to
configuration mode
All LEDs flash 10 times after power-
up
Backup error
Correct serial-port
communication parameters
Input port’s LED rapidly flashes for
about 10 seconds
Transmission error
LEDs keep flashing until
memory becomes available
All LEDs flash together
Memory full
Output port’s LED flashes (about
1
⁄
8
pulse per second)
Pause
Bidirectional ports’ LEDs flash
Permanent (/L command) or
bidirectional (/Y or /Z) link
Current input port’s LED flashes
(about once a second)
Reception of command
LED stays on until port
timeout expires
Output port’s LED is constantly lit
Task transmission
Input port’s LED flashes (about
three times a second)
Reception of task
Port #1’s LED flashes red
Configuration parameters of
port 1 reset to default values
All LEDs turn on together, then off,
then sequentially turn on and off
Turning on MPS-VIII
Notes
Display Codes
Event
Содержание PI750A
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