IDEC FT1A Series User Manual page 261

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 WindLDR. See
"Programming WindLDR" on page 10-4.
Setting Communication Parameters
Set the communication parameters to match those of the printer. See "Programming WindLDR" on page 10-4. For details of the
communication parameters of the printer, see the user's manual for the printer. An example is shown below:
Communication Parameters:
Baud rate: 9600 bps
Data bits: 8
Parity check: None
Stop bits: 1
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)
M8125
M0
SOTU
M0
SP SP SP – –
20h 20h 20h 2Dh 2Dh
E S T SP –
45h 53h 54h 20h 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
D31 Conversion: BCD→ASCII Digits: 4 REP: 01
CR LF SP SP SP
0Dh 0Ah 20h 20h 20h
D30 Conversion: BCD→ASCII Digits: 4 REP: 01
CR LF CR LF
0Dh 0Ah 0Dh 0Ah
MOV(W) S1 – D1 –
3 D8105
S1 – 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
2Dh 20h 50h 52h 49h 4Eh
– – CR LF CR LF
2Dh 2Dh 0Dh 0Ah 0Dh 0Ah
T 2 . . .
54h 32h 2Eh 2Eh 2Eh
D 0 3 0 . .
44h 30h 33h 30h 2Eh 2Eh
S AXIS P
MART
10: 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.
When the D8014 data equals 0 second, M0 is turned on.
REP
Counter C2 current value is moved to D31.
REP
D8012 hour data is moved to D20.
D8013 minute data is moved to D21.
REP
TXD2 is executed to send 73-byte data through the RS232C port 2 to
D2
D0 the printer.
T SP T
54h 20h 54h
SP SP SP
20h 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 digits 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.
.
2Eh
END
/L U ' M FT9Y-B1378
RO ITE SER S ANUAL
C
SER OMMUNICATION
I
NSTRUCTIONS
10-25