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Communication Buffer 5-71
5.9.4 Errors
(1) Errors during external communications
Errors during print content transmission and print data call-up
No.
Condition
Type of error
1
Not all received print contents could be held in buffer because
its capacity was exceeded
NAK is returned.
However, this will not cause any
external communication error.
2
Number of print items of received contents is more than 9.
External communication error 030
3
Calendar or count character was included in print data call-up
transmission
External communication error 027
Error when buffer is cleared
No.
Condition
Type of error
1
Text was transmitted together with another text
External communication error 002
(2) Errors during printing
Errors during printing
No.
Condition
Type of error
1
The number of received contents in buffer was less than "Data
number at Fault".
Fault "Communication Buffer
Fault"
2
Print start signal was received during print data switching
immediately after ACK was returned to "restart printing"
Fault
"Invalid Data Change Timing"
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When "communication buffer fault" occurs, the window will be cleared, followed by standby
status.
(3) Error when status is changed
Error when status is changed
No.
Condition
Type of error
1
Calendar characters or count characters were included to
existing print contents when restored to online.
Confirmation message
"Communication buffer error"
