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■ RS232C Port Test..................................Loop back test for RS232C
Operation : 2 0 7 #–2 SUBTOTAL
The roop back test for RS232C port is performed by the connection shown below.
Test contents
(1) HI/LOW level reception check of DSR line
(2) Sending data (OA5h) to Tx D line, receiving the same data from Rx D line
The above (1) is checked once when the test starts.
The above (2) is checked repeatedly until power failure, mode OFF, or an error occurs.
“–” blinks on the most significant digit which is displayed during the test.
When the test normally ends, the following is printed and the receipt is issued.
Issuing receipt
When the test does not end normally, the following is printed and the receipt is issued
X: Error code
Issuing receipt
0 : Time over 1 : Overrun
2 : Flaming error 3 : RxD line data error
4 : DSR line reception error
■ Printing all characters
Operation : X 8 #–2 SUBTOTAL
X : 0 (or abbreviated) ... All characters are printed.
[Print image] partly differs from the actual printing
← Printed according to the character code list
Issuing receipt
232C OK
232C OK X
2 Pin
3 Pin
6 Pin
TxD
RxD
DSR
#8
00
10
20 !
~
#$%&'()*+,-./
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