Rockwell Automation 1756-L55M12, Руководство по выбору

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1756-SG001G-EN-P — March 2004
DH-485 Network
On the DH-485 network, the controller can send and receive messages to and from
other controllers on the network. The DH-485 connection does support remote
programming and monitoring via RSLogix 5000 software. However, excess traffic over
a DH-485 connection can adversely affect overall performance and can lead to
timeouts and loss in RSLogix 5000 configuration performance.
Important: Only use Logix controllers on DH-485 networks when you want to add
controllers to an existing DH-485 network. For new applications with Logix
controllers, networks in the NetLinx architecture are the recommended networks.
You need a 1761-NET-AIC+ converter for each controller you want to put on the DH-
485 network. You can have two controllers per one 1761-NET-AIC+ converter, but
you need a different cable for each controller. Connect one controller to port 1 (9-pin
connector) and one controller to port 2 (mini-DIN connector).
If you connect to this port: Use this cable:
port 1
DB-9 RS-232, DTE connection
1747-CP3
or
1761-CBL-AC00
port 2
mini-DIN 8 RS-232 connection
1761-CBL-AP00
or
1761-CBL-PM02