Casio TK-6500 Series, Service Manual

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Opeartion : d d s s b m 6 2 X 7 #2 Key
b: Baud rate selection
0= 156 K bps
1= 312 K bps
m: Test Mode selection
1= Reception mode 1
2= Send mode 1
3= Reception mode 2 4= Send mode 2
dd: The other machine ID number ss: The machine ID number
X: 0= Normally select 0.
1= When error is happened, print error receipt before retry operation.
Test procedure
1) Operate the reception machine first.
2) Operate the send machine. Then, the both machines are communicated each others.
3) During communication waiting time, the display will show the "-" blinking 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 key or trun off the mode key switch.
NOTE2: The send packet data format is as follows:
NOTE3: In case the data is received correctly,
1) MODE 1
Reception mode 1: Check the receive data. Then, send the reverse receive
data (FBh to 01h,00h, FFh to 00h) back to the send
machine.
Send mode 1 : Then, after checking the reverse data, send the test data
again.
This action will continue until making the stop operation.
SID
DID Data
(00h to FFh,00h,01h to FBh) LRC
Total 508 bytes
LEN
2) MODE 2
Reception mode 2: Check the receive data only.
Send mode 2
: Send the test data each one second continuously.
This action will continue until making the stop operation.
RETRY OPERATION
1) Reception side: (Reception mode 1 is selected.)
Until 7 times continuous error, retry the reception.
Over 8 times continuous error, issue the error receipt.
2) Send side : (Send mode 1 is selected.)
If there are no answer from reception machine, the machine
will wait after 3 seconds, retry 7 times send operation.
Over 8 times error, issue the error receipt.