14. COMMUNICATION FUNCTION
14 - 25
14.5.4 External I/O signal status (DIO diagnosis)
(1) Reading input device status
Read the status of the input devices.
(a) Transmission
Transmit command [1] [2] and data No. [0] [0].
Command Data No.
[1] [2] [0] [0]
(b) Return
The slave station returns the status of the input devices.
b31 b1b0
1: On
0: Off
Command of each bit is transmitted to the master station as hexadecimal data.
Bit Symbol Bit Symbol Bit Symbol Bit Symbol
0 SON 8 SP1 16 24
1 LSP 9 SP2 17 25
2 LSN 10 SP3 18 26
3 TL 11 ST1/RS2 19 27 CDP
4 TL1 12 ST2/RS1 20 STAB2 28 CLD
5 PC 13 CM1 21 29 MECR
6 RES 14 CM2 22 30
7 CR 15 LOP 23 31
(2) Reading external input pin status
Read the on/off status of the external input pins.
(a) Transmission
Transmit command [1] [2] and data No. [4] [0].
Command Data No.
[1] [2] [4] [0]
(b) Return
The on/off status of the input pins are returned.
b31 b1b0
1: On
0: Off
Command of each bit is transmitted to the master station as hexadecimal data.
Bit CN1 connector pin Bit CN1 connector pin Bit CN1 connector pin Bit CN1 connector pin
0 43 8 18 16 24
1 44 9 45 17 25
2 42 10 18 26
3 15 11 19 27
4 19 12 20 28
5 41 13 21 29
6 16 14 22 30
7 17 15 23 31
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