34
Method for Connection to the Host
Section 2-1
Usable Communication
Method
Communication
Type at PT
Communication
Type at Host
Usable Connection Method
Host
link
NT
Link
(1:1)
NT
Link
(1:N)
Mem
ory
link
Details
1:1 connection via a convertor unit
PT
Convertor unit
(NT
-
AL001)
Host
RS
-
485
(max. 500 m)
RS
-
232C
(max. 2 m)
f
99
RS-485
RS-232C
1:N connection via a convertor unit
PT
Host
Convertor unit
(NT
-
AL001)
RS
-
485
(total length 500 m)
RS232C
(max. 2 m)
f
104
RS-485
Direct 1:1 connection
PT
Host
RS
-
485 (max. 500 m)
f
138
RS-485
1:N connection
PT
Host
RS
-
485 (total length 500 m)
f
142
f
: Connection possible
: Connection not possible
- The RS-232C/RS-422A convertor unit (NT-AL001) re5 V, 150 mA at
pin 6 of the RS-232C connector. Check the signals of the RS-232C connector
at the host.
- +5 V is not output from serial port B of the NT31/NT31C. When connecting an
NT-AL001 at serial port B, a separate power supply is required for the NT-
AL001.
- The cable of an NT-AL001 cannot be connected or disconnected while the
power is ON. Always connect or disconnect the cable while the power supply
from the RS-232C cable is OFF (while the host power supply is OFF).
- NT link (1:N) connection is possible even when RS-232C is used at the
NT31/NT31C side for communication with the host, but in this case one NT-
AL001 unit is required for each NT31/NT31C. In this case, it is convenient to
use serial port A of the NT31/NT31C. +5 V is not output from serial port B.
Summary of Contents for NT31 Series
Page 1: ...Cat No V043 E1 2 Programmable Terminal NT31 31C OPERATION MANUAL...
Page 2: ...iii NT31 31C Programmable Terminal Operation Manual Produced March 1999...
Page 41: ...30 Before Operating Section 1 5...
Page 75: ...64 Using a Memory Unit NT31 NT31C without V1 Section 3 6...
Page 160: ...149...
Page 174: ...163...
Page 193: ...182...
Page 211: ...200...
Page 235: ...224 c Return to the screen on which screens are specified...
Page 262: ...251...
Page 360: ...349 It is not possible to control a gloval window by touch switch operation...
Page 468: ...457 254 255 0 2 7 1 4 5 3 3 0 0 0 5 9 8 0 3...
Page 476: ...465 Special Functions Section 7 16...
Page 495: ...484 OFF...
Page 610: ...599 Commands Responses Section 9 3...
Page 630: ...619 Examples of Actual Applications of Memory Link Section 10 2...