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Using the I/O Section
Communications
19
13
7
1
20
14
8
2
21
15
9
3
22
16
10
4
23
17
11
5
24
18
12
6
E5ZN-SCT24S-500
• When communicating with a host, connect across terminals 23 and 24.
• The RS-485 connection can be either one-to-one to one-to-N. Up to 16
Temperature Controllers can be connected in one-to-N systems.
• Keep the total cable length to 500 m maximum.
■ Isolation
The E5ZN terminals are electrically isolated in the blocks shown below.
Voltage output model
E5ZN-2Q@H03@-FLK
G
F
A
F
19
13
7
1
13
20
14
8
2
14
21
15
9
15
3
C
22
16
10
4
16
23
17
11
5
17
24
18
12
6
18
C
A
B
A
E5ZN-SCT24S-500 E5ZN-SCT18S-500
Current output model
E5ZN-2C@F03@-FLK
G
F
A
F
19
13
7
1
20
14
8
2
21
15
9
3
C
22
16
10
4
23
17
11
5
24
18
12
6
C
A
H
B
A
E5ZN-SCT24S-500
E5ZN-SCT18S-500
• Use shielded, twisted-pair cable (with wire sizes of AWG 28 or larger).
Cable
B(+)
23
RS-485
A( )
24
A
7
1
8
2
9
3
C
10
4
11
5
12
6
B
A
13
7
1
14
8
2
15
9
3
C
16
10
4
17
11
5
18
12
6
H
B
AWG 28 or larger
0.081 mm
conductor cross-section
Section 2-2
Transistor output model
E5ZN-2T@H03@-FLK
G
F
E
D
F
E
19
13
7
1
13
7
20
14
8
2
14
8
21
15
9
15
9
3
C
22
16
10
4
16
10
23
17
11
5
17
11
24
18
12
6
18
12
C
A
B
A
E5ZN-SCT24S-500 E5ZN-SCT18S-500
2
or larger
D
1
2
3
C
4
5
6
B
17
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