Specifications

Rockwell Automation Publication AG-SG001G-EN-P - April 2015 43
Choosing Data Communication Equipment Chapter 3
• Requirements of the DTE devices to which you are connecting.
– Do you need asynchronous or synchronous operation?
– What interfaces do you need (RS-232, MIL 188, EIA-449, IEEE 488,
CCITT V.24)?
– What other features are required to support your DTEs?
• Required standards (for example, UL, CSA, and FCC).
• Space requirements. Do you need a rack-mounted or stand-alone modem?
• Input-power requirements.
• Ambient temperature specifications.
•Modem design and operation.
• Modem response time.
Once you have a good idea of the modem type you need, choose a modem based
on the many available features and options, which vary by manufacturer.
Analog Dial-up Modem
The following table lists the modem features that are required by certain Allen-
Bradley DTE devices. Since you may not know the exact programmable
controller or computer your application requires, you may need to refer to this
table after you have chosen your DTEs to finalize your modem selection.
TIP
If you are using all Allen-Bradley DTE devices,
choose an asynchronous modem.
Topic Page
Analog Dial-up Modem
43
Analog Leased-line Modems 44
Digital Leased-line ISUs 45
%%
If you are using this DTE The DTE needs support for Make certain the modem you choose has this feature
ControlLogix processors ASCII strings to configure and
control the dial-up modem
AT-command-set support
CompactLogix
MicroLogix (except 1000)
SLC 5/03, 5/04, and 5/05 processors
RSLinx software
MicroLogix 1000 controllers Answer capability only Auto answer support