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T1/T1S User’s Manual
7. Instructions
<Transmitting>
When the instruction input is ON, one set of message which is stored in the source table (from
start character to the trailing code) is transmitted through the RS-485 port. The execution status is
stored in the status flag.
The instruction input must be kept ON until the transmitting operation is complete.
Example
Source designation Transfer size Destination designation
D0010 H00 H04 D0012 00012 D0015 H00 H30
D0011 00500 D0013 Execution status D0016 00000
D0500 (CPU register) T1S RS-485 port
When R0001 is ON, one set of message (ended by the trailing code) stored in the range of D0500
to D0511 (12 words) is transmitted through the RS-485 port.
Execution status:H0000 ... Normal complete
H0001 ... During transmitting the message
H0002 ... Communication busy
H0003 ... During the reset operation
H0004 ... Send time-out (from start character to the trailing code)
H0005 ... Send message length error (no trailing code in the source table)
Baudrate Time-out settin
g
300, 600, 1200 bps 30 seconds
2400 bps 15 seconds
4800 bps 7 seconds
9600 bps 3 seconds
19200 bps 1.5 seconds
Note
·
The XFER instruction is not executed as error in the following cases. In these cases, the instruction
error flag (ERF = S051) is set to ON. If the ERF is set to ON once, it remains ON until resetting to
OFF by user program.
(1) The leading address for the RS-485 port designation is other than 0.
(2) Transfer size is out of the range of 1 to 256.
(3) Mode setting of the RS-485 port is not the free ASCII mode.
(4) This instruction is programmed in the sub-program #1.
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