24
Part Names and Functions
Section 2-1
RS-422A/485 Terminal Block
DIP Switch for Operation Settings
Note
(1) Set both pins 2 and 3 to either ON (2-wire) or OFF (4-wire).
(2) To disable the echo-back function, set pin 5 to ON (RS control enabled).
(3) When connecting to a device on the N side in a 1: N connection with the
4-wire method, set pin 6 to ON (RS control enabled).
Also, when connecting by the 2-wire method, set pin 6 to ON (RS control
enabled).
COMM
RDA
−
RDB+ SDA
−
SDB+ FG
Front
Back
(1) Communications Status Indicator
(2) RS-422A/485 Connector
(3) CPU Unit Connector
(4) DIP Switch for
Operation Settings
RDB+
RDA
−
SDA
−
SDB+
FG
Tighten the terminal block screws to
a torque of 0.28 N·m (2.5 Lb In.).
CP1W-CIF11/12
CP1W-CIF12-V1
Settings
Pin
Pin
SW
1
SW1
1
ON
ON (both ends)
Terminating resistance selection
Resistance value: 220
Ω
typical
OFF
OFF
2
2
ON
2-wire
2-wire or 4-wire selection (See
note 1.)
OFF
4-wire
3
3
ON
2-wire
2-wire or 4-wire selection (See
note 1.)
OFF
4-wire
4
4
---
---
Not used.
5
SW2
1
ON
RS control enabled
RS control selection for RD (See
note 2.)
OFF
RS control disabled (Data
always received.)
6
2
ON
RS control enabled
RS control selection for SD (See
note 3.)
OFF
RS control disabled (Data
always sent.)
O
N
1
2
3
4
5
6
O
N
1
2
3
4
O
N
1
2
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......