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2-1SectionMethod for Connection to the Host
27
Combinations of Communication Method and Connection Method
The connection methods that can be used depending on the communication
method used and the communication type for communication between the
NT31/NT31C and the host are indicated in the table below.
Communica- Communica-
Usable Communication
Method
Communica
tion Type at
PT
Communica
tion Type at
Host
Usable Connection Method
Host
link
NT
Link
(1:1)
NT
Link
(1:N)
Memory
link
Details
RS-232C RS-232C
Direct 1:1 connection
PT
Host
RS-232C (max. 15 m)
f f f f
79
1:1 connection via a convertor unit
PT
RS-232C
(max. 2 m)
Host
RS-422A
(max. 500 m)
Convertor unit
(NT-AL001)
f f f f
88
RS-422A
RS-232C
1:N connection via a convertor unit
PT
Host
Convertor unit
(NT-AL001)
RS-422A
(total length 500 m)
RS-232C
(max. 2 m)
f
92
RS-422A
Direct 1:1 connection
PT
Host
RS-422A (max. 500 m)
f f f f
117
RS-422A
1:N connection
PT
Host
RS-422A (total length 500 m)
f
122
f: Connection possible : Connection not possible