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21) COM1 online test
This operation will test the COM1 online function. This test need the reception machine
as shown below;
Wiring diagram for the connection cable Loop back connector
Signal Pin Signal Pin
CD 1 CD 1 Txd
RxD 2 RxD 2 Rxd
TxD 3 TxD 3 CTS
DTR 4 DTR 4 RTS
GND 5 GND 5 DTR
DSR 6 DSR 6 DSR
RTS 7 RTS 7 CD
CTS 8 CTS 8 CI
CI 9 CI 9
Send
ECR
Receive
ECR
Cross cable
COM1 COM1
Cable length = Max. 15m
3pin
2pin
8pin
7pin
4pin
6pin
1pin
9pin
COM1
COM1 COM1
Opeartion : z z b m 7 2 X 7 #2 Key
b: Baud rate selection
0= 19,200 bps 1= 9,600 bps 2= 4,800bps 3= 2,400bps 4= 38,400 bps
m: Test Mode selection
0= Self loop test 1= Reception mode 2= Send mode
ZZ: Time out number (seconds) input between data
(default is 3 seconds. Input ZZ, ZZ seconds will be the time of time out.)
X: 0= Normally select 0.
1= When error is happened, print error receipt before retry operation.
Test procedure
1) Operate the send machine first. The send machine will wait the "C" signal (send
request) reception from the reception machine.
The send machine will wait the send request signal about 30 seconds. When it is over
30 seconds, the time out error will be printed on the receipt.
2) Operate the reception machine. Then, the both machines are communicated each
others. This time first block data wait time is 5 seconds. The total resend request time
is 5 time.
3) During communication waiting time, the display will show the "-" brinking on the most
left side digit of segment display. When the data is OK, the reception/transmission
packet number will be displayed on the segment display.
NOTE1: To stop this opeartion, press any or trun off the mode key switch.
NOTE2: The send packet data format is as follows:
( Communication format is 8 bits, even parity, stop bit= 1bit fixed.)
STX
03h
Block counter
2 bytes
Data (55h X 1,020 pcs.)
LRC
Total 1,024 bytes
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