YOKOGAWA UP35A - Page 308

16-9
IM 05P02D41-01EN
Troubleshooting, Maintenance, and Inspections
16
Errors during Operation (Input/output Action)
Error
description
PV input
Ladder calcu-
lation
Control
compu-
tation
Control
output
Retrans-
mission
output
Alarm
action
Analog out-
put (control
output,
retrans-
mission
output)
V
oltage
pulse out-
put (control
output)
Relayout-
put (control
output,
position
proportion-
al output)
Feedback
input
(for
Position
proportion-
al
type)
Contact
input
Contact
(alarm)
output
Com-
munica-
tion
Peer-to-peer communication
error
Normal action
Normal action
(However, the
peer-to-peer
communication
register is not
updated.)
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Auto-tuning time-out Normal action Normal action
Auto-
tuning
stopped,
normal
action
Auto-
tuning
stopped,
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Automatic valve position
adjustmenterror
Normal action Normal action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
–
Normal
action
105%
Normal
action
Normal
action
Normal
action
Communication error
(RS485 communication)
Normal action Normal action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Userproleerror Normal action Normal action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
PROFIBUS-
DP/DeviceNet/
CC-Link
communication
is disabled
Faulty FRAM Normal action Normal action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
Normal
action
16.1 Troubleshooting