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Rockwell Automation Publication 2080-UM002K-EN-E - March 2019
Chapter 5
Communication Connections
Use Modems with
Micro800 Controllers
Serial modems can be used with the Micro830, Micro850, and Micro870
controllers.
Making a DF1 Point-to-Point Connection
You can connect the Micro830, Micro850, and Micro870 programmable
controller to your serial modem using an Allen-Bradley null modem serial cable
(1761-CBL-PM02) to the controller’s embedded serial port together with a
9-pin null modem adapter – a null modem with a null modem adapter is
equivalent to a modem cable. The recommended protocol for this configuration
is CIP Serial.
Construct Your Own Modem Cable
If you construct your own modem cable, the maximum cable length is 15.24 m
(50 ft) with a 25-pin or 9-pin connector. Refer to the following typical pinout for
constructing a straight-through cable:
DTE Device
(Micro830/850/870
Channel 0)
DCE Device
(Modem, etc)
n
i
P
-
9
n
i
P
-
5
2
n
i
P
-
8
3
2
D
X
T
D
X
T
7
2
3
D
X
R
D
X
R
4
5
7
D
N
G
D
N
G
2
1
8
D
C
D
)
+
(
B
1
4
0
2
R
T
D
)-
(
A
8
6
6
R
S
D
D
C
D
5
8
5
S
T
C
S
T
C
6
7
4
S
T
R
S
T
R
3
Summary of Contents for Micro830
Page 6: ...vi Rockwell Automation Publication 2080 UM002K EN E March 2019 Preface Notes ...
Page 273: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 259 Quickstarts Appendix C ...
Page 300: ...286 Rockwell Automation Publication 2080 UM002K EN E March 2019 Appendix C Quickstarts Notes ...
Page 352: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 338 Index Notes ...
Page 353: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 339 ...