SMC Networks LECSB2-T Series - Page 482

14. COMMUNICATION FUNCTION
14 - 28
(3) Reading the status of input devices switched on with communication
The following shows how to read the on/off status of the input devices switched on with communication.
(a) Transmission
Transmit command [1] [2] and data No. [6] [0].
Command
Data No.
[1] [2]
[6] [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
(4) Reading external output pin status
The following shows how to read the on/off status of the external output pins.
(a) Transmission
Transmit command [1] [2] and data No. [C] [0].
Command
Data No.
[1] [2]
[C] [0]
(b) Return
The slave station returns the status of the output devices.
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
49
8
14
16
24
1
24
9
17
25
2
23
10
18
26
3
25
11
19
27
4
22
12
20
28
5
48
13
21
29
6
33
14
22
30
7
13
15
23
31