2WA/2NJ/2RK
7-521
U01820/E01820
U01821/E01821
U03000/E03000
U03200/E03200
Step Check description Assumed cause Measures Reference
1 Request for resending A communication error
occurred in phase 3 (pri-
mary channel equivalent
device training).
Request the destination unit
to resend the data after
reducing the transmit start
speed.
2 Changing the initial value Line condition is poor.
(Own machine)
Change the reception speed
by executing U630 [RX
Speed].
U630 Exe-
cution
Step Check description Assumed cause Measures Reference
1 Request for resending The communication was
interrupted because there
is no communication
speed commonly used
with the destination unit.
Request the destination unit
to resend the data after
reducing the transmit start
speed.
2 Changing the initial value Line condition is poor.
(Own machine)
Change the reception speed
by executing U630 [RX
Speed].
U630 Exe-
cution
Step Check description Assumed cause Measures Reference
1 Checking the destination
unit
No document was present
in the destination unit
when polling reception
started.
Request the destination unit
to set the originals.
Step Check description Assumed cause Measures Reference
1 Checking the destination
unit
There is no data in the sub
address box in the main
unit that are specified from
the destination unit.
Request the destination unit
to store the original data in
the sub address box.