IDEC FC4A-C10R2 User Manual page 311

Setting User Communication Mode in WindLDR Function Area Settings
Since this example uses the RS232C port 2, select User Protocol for Port 2 in the Function Area Settings using
See page 17-5.
Setting Communication Parameters
Set the communication parameters to match those of the printer. See page 17-5. For details of the communication parame-
ters of the printer, see the user's manual for the printer. An example is shown below:
Communication Parameters:
Baud rate
Data bits
Parity check
Stop bits
Note: The receive timeout value is used for the RXD instruction in the user communication mode. Since this example uses
only the TXD instruction, the receive timeout value has no effect.
Ladder Diagram
The second data stored in special data register D8014 is compared with 0 using the CMP= (compare equal to) instruction.
Each time the condition is met, the TXD2 instruction is executed to send the C2 and D30 data to the printer. A counting
circuit for counter C2 is omitted from this sample program.
M8120
CMP=(W) S1 –
M8125
M0
SOTU
M0
SP SP SP – –
20h 20h 20h 2Dh 2Dh 2Dh
E S T SP –
45h 53h 54h 20h 2Dh 2Dh
D20 Conversion: BCD→ASCII Digits: 2 REP: 01
H SP
48h 20h
D21 Conversion: BCD→ASCII Digits: 2 REP: 01
M CR LF CR LF
4Dh 0Dh 0Ah 0Dh 0Ah
SP SP SP C N
20h 20h 20h 43h 4Eh 54h
D31 Conversion: BCD→ASCII Digits: 4 REP: 01
CR LF SP SP SP
0Dh 0Ah 20h 20h 20h 44h
D30 Conversion: BCD→ASCII Digits: 4 REP: 01
CR LF CR LF
0Dh 0Ah 0Dh 0Ah
9600 bps
8
None
1
MOV(W) S1 – D1 –
3 D8105
S2 – D1 –
D8014 0 M0
MOV(W) S1 – D1 –
C2 D31
MOV(W) S1 – D1 –
D8012 D20
MOV(W) S1 – D1 –
D8013 D21
TXD S1 D1
2 73 M1
– SP P R I N
20h 50h 52h 49h 4Eh 54h
– – CR LF CR LF
2Dh 0Dh 0Ah 0Dh 0Ah 20h
T 2 . . .
32h 2Eh 2Eh 2Eh
D 0 3 0 . .
30h 33h 30h 2Eh 2Eh 2Eh
« FC4A M
17: U
M8120 is the initialize pulse special internal relay.
REP
3 → D8105 to enable the DSR option for busy control.
M8125 is the in-operation output special internal relay.
REP
CMP=(W) compares the D8014 second data with 0.
REP When the D8014 data equals 0 second, M0 is turned on.
Counter C2 current value is moved to D31.
REP
D8012 hour data is moved to D20.
REP D8013 minute data is moved to D21.
TXD2 is executed to send 73-byte data through the RS232C
D2
D0
port 2 to the printer.
T SP T
20h 54h
SP SP SP
20h 20h
D20 hour data is converted from BCD to ASCII, and 2 digits
are sent.
D21 minute data is converted from BCD to ASCII, and 2 dig-
its are sent.
D31 counter C2 data is converted from BCD to ASCII, and 4
digits are sent.
.
D30 data is converted from BCD to ASCII, and 4 digits are
sent.
END
S U ' M
ICRO MART SER S ANUAL
C
SER OMMUNICATION
»
I
NSTRUCTIONS
WindLDR .
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