99
Connecting to the Host’s RS-232C Port
Section 5-1
5-1-2
1:1 Connection between RS-422A/485 at the NT31/NT31C and
RS-232C at the Host
The connection method in which the RS-422A/485 port of an NT31/NT31C and
the RS-232C port of a host are connected via a convertor unit is described here.
An RS-232C/RS-422A convertor unit (NT-AL001) is used to convert between the
RS-232C and RS-422A communication methods.
NT31/NT31C
Serial port B
(RS-422A/485,
25-pin type)
Host link unit/CPU
SYSMAC
C-series PC,
CVM1/CV-series PC, SRM1
25-pin connector
RS-232C/RS-422A
convertor unit
(NT-AL001)
9-pin connector or
25-pin connector
RS-422A/485 cable
(max. length: 500 m)
RS-422A terminal block
9-pin connector
RS-232C cable
with connectors
Reference: When using RS-485 as a port for the NT31/NT31C, only NT link (1:N) method can
be used.
Connecting an NT31/NT31C and NT-AL001 (RS-422A)
RS-422A
NT31/NT31C
Host
NT-AL001
NT31/NT31C side
1
14
13
25
7
5
3
1
NT-AL001 side
Shielding wire
(25-pin type)
Abbreviation
FG
−
SD
RD
RS
CS
−
SG
−
TRM
RDB (+)
SDB (+)
−
−
−
SDA (
−
)
RDA (
−
)
−
−
RSB (+)
RSA (
−
)
−
Pin number
Connector
hood
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
−
23
24
25
Pin number
6
5
4
3
1
Abbreviation
RDA
RDB
SDA
SDB
Functional
ground
8
6
4
2
RS-232C/
422A/485
connector
RS-422A
terminal
block
In order to avoid an FG ground loop, do not make the connection between the func-
tional ground of the NT-AL001 and the shielding.
Содержание NT31 Series
Страница 1: ...Cat No V043 E1 2 Programmable Terminal NT31 31C OPERATION MANUAL...
Страница 2: ...iii NT31 31C Programmable Terminal Operation Manual Produced March 1999...
Страница 41: ...30 Before Operating Section 1 5...
Страница 75: ...64 Using a Memory Unit NT31 NT31C without V1 Section 3 6...
Страница 160: ...149...
Страница 174: ...163...
Страница 193: ...182...
Страница 211: ...200...
Страница 235: ...224 c Return to the screen on which screens are specified...
Страница 262: ...251...
Страница 284: ...273 The printer type control protocol and printing method are set with the memory switches of the NT31 NT31C...
Страница 347: ...336 Screen number 5 is set for touch switch 1 To next screen When touch switch 1 is pressed Screen number 5...
Страница 360: ...349 It is not possible to control a gloval window by touch switch operation...
Страница 375: ...364 For details on the method of display depending on the General settings refer to Common Attributes page 358...
Страница 391: ...380 1 The 100 value 0 value and 100 value must comply with the following relationship 100 value 0 value 100 value...
Страница 468: ...457 254 255 0 2 7 1 4 5 3 3 0 0 0 5 9 8 0 3...
Страница 476: ...465 Special Functions Section 7 16...
Страница 495: ...484 OFF...
Страница 610: ...599 Commands Responses Section 9 3...
Страница 630: ...619 Examples of Actual Applications of Memory Link Section 10 2...