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CIF11
CIF12
Setting
SW
No.
SW
No.
SW1
1
SW1
1
ON
Terminating re-
sistance provid-
ed
Select whether a terminating resistance is
provided or not. The value of a terminating
resistance is approximately 220 Ω.
OFF
Terminating re-
sistance not pro-
vided
2
2
ON
Two-wire type
Select the two-wire or four-wire type.
To set the two-wire type, turn ON both No. 2
and No. 3 pins. To set the four-wire type,
turn OFF both No. 2 and No. 3 pins.
OFF
Four-wire type
3
3
ON
Two-wire type
OFF
Four-wire type
4
4
---
---
Not used.
5
SW2
1
ON
RS control ena-
bled
Select whether to enable the RS control for
receive data.
To prohibit the echo back, enable the RS
control (ON).
OFF
RS control disa-
bled
(continuous re-
ception)
6
2
ON
RS control ena-
bled
Select whether to enable the RS control for
send data.
For a four-wire, 1-to-N connection, enable
the RS control (ON) if you connect the Unit
to a device on the N side.
For a two-wire connection, always enable
the RS control (ON).
OFF
RS control disa-
bled
(continuous
transmission)
All pins are turned OFF by default.
Use a narrow-tipped tool such as a flat-blade screwdriver to change the settings of the DIP
switches.
l
RS-422A/485 Terminal Block
RDA- RDB+ SDA- SDB+ SHLD
Abbrevi-
ation
Four-wire type selected
Two-wire type selected
Signal name
I/O
Signal name
I/O
RDA-
Reception data −
Input
Communication
data −
I/O
*1
RDB+
Reception data +
Communication
data +
SDA-
Transmission da-
ta −
Output
Communication
data −
I/O
*1
SDB+
Transmission da-
ta +
Communication
data +
SHLD
Shield
*1. For two-wire connection, either the RDA-/RDB+ pair or SDA-/SDB+ pair can be used.
3 Configuration Units
3-25
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
3-3
Serial Communications Option Board
3
3-3-3
Part Names and Functions
Содержание NX1P2 series
Страница 8: ...Manual Structure 6 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 52: ...Revision History 50 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 82: ...2 System Configuration 2 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 170: ...a b Flat blade screwdriver 1 2 5 Installation and Wiring 5 26 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 174: ...4 Close the Memory Card cover 5 Installation and Wiring 5 30 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 176: ...4 Close the Memory Card cover 5 Installation and Wiring 5 32 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 224: ...0 4 mm Side view Front view 2 5 mm 5 Installation and Wiring 5 80 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 258: ...Appendices A 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 259: ...I Index I 1 NX series NX1P2 CPU Unit Hardware User s Manual W578 I...
Страница 262: ...Index I 4 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 263: ......