2WA/2NJ/2RK
7-519
U01600/E01600
U01700/E01700
U01720/E01720
Step Check description Assumed cause Measures Reference
1 Checking the destination
unit
The communication line is
the poor condition.
Request the destination unit
to resend the data after
reducing the transmit start
speed.
2 Changing the transmit start
timing
The communication line
condition is poor and an
error frequently occurs.
Request the destination unit
to resend the data after low-
ering the reception start
speed.
U630 Exe-
cution
Step Check description Assumed cause Measures Reference
1 Resending A communication error
occurred in phase 2 (line
probing).
Resend.
2 Checking the transmit start
speed
Line condition is poor.
(Destination unit)
Execute U630 [TX Speed] to
reduce the transmit start
speed. Then, resend the
data.
U630 Exe-
cution
3 Changing the initial value Line condition is poor.
(Own machine)
Change the default value of
the transmit start speed by
executing U630 [TX Speed].
U630 Exe-
cution
Step Check description Assumed cause Measures Reference
1 Resending The communication error
appears at phase 4
(replacing the modem
parameter).
Resend.
2 Checking the transmit start
speed
Line condition is poor.
(Destination unit)
Execute U630 [TX Speed] to
reduce the transmit start
speed. Then, resend the
data.
U630 Exe-
cution
3 Changing the initial value Line condition is poor.
(Own machine)
Change the default value of
the transmit start speed by
executing U630 [TX Speed].
U630 Exe-
cution