Ttl/Relay Interface - AVT MAGIC THipPro Hardware Manual

3.2.4

TTL/Relay interface

The TTL/relay interface is realised as a 25-pin socket. It provides eight TTL
inputs/outputs as well as eight relay contacts.
Pin assignment: TTL/RELAY INTERFACE
Socket: SUB-D 25-pin
Pin Signal
1 TTL 1
2 TTL 2
3 TTL 3
4 TTL 4
5 TTL 5
6 TTL 6
TTL 7
7
8 TTL 8
RELAY 4 (B)
9
10 RELAY 5 (B)
11 RELAY 6 (B)
12 RELAY 7 (B)
13 RELAY 8 (B)
14 RELAY 1 (A)
15 RELAY 1 (B)
GND
16
17 RELAY 2 (A)
RELAY 2 (B)
18
19 RELAY 3 (A)
20 RELAY 3 (B)
21 RELAY 4 (A)
22 RELAY 5 (A)
23 RELAY 6 (A)
24 RELAY 7 (A)
25 RELAY 8 (A)
NO = normally open contact
NC = normally closed contact
Electrical characteristics
input/output TTL interface:
input/output Capacity of the TTL outputs:
Maximum voltage: 3.3V
input/output
Maximum current: 10mA
input/output
input/output
Relay interface:
input/output
Capacity of the relays:
input/output
Maximum voltage: 48V
input/output
Maximum current: 200mA
output, NO
output, NC
output, NC
output, NO
output, NO
output, NC
output, NC
output, NC
output, NC
output, NO
output, NO
output, NO
output, NC
output, NC
output, NO
output, NO
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