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Rockwell Automation Publication 2080-UM002N-EN-E - November 2022
Chapter 5 Communication Connections
EtherNet/IP to DeviceNet
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. See the following typical pinout for constructing a straight-through
cable:
Configure Serial Port
You can configure the serial port driver as CIP Serial, Modbus RTU, ASCII, or Shutdown through
the Device Configuration tree in the Connected Components Workbench software.
DeviceNet
PowerFlex 525 drive
with
25-COMM-D adapter
(Address 1)
EtherNet/IP
Esc
Sel
Micro850 controller
with
2080-DNET20 plug-in scanner
(Address 0)
CompactBlock LDX I/O
(Address 2)
The user can use Connected Components Workbench software to
configure the PowerFlex drives.
For program download
IMPORTANT
Micro800 controllers do not support more than one hop (for example,
from EtherNet/IP -> CIP Serial -> EtherNet/IP).
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