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Honeywell Automation Application Examples
Utilization of Data-Linc Modems with Honeywell IAC Equipment
Data-Linc license-free serial radio modems and FSK wireline modems have been used by Honeywell IAC. Two typical installations where the Data-Linc MDL500 FSK wireline modems are being used to interface with Honeywell equipment are highlighted below. These modems provide immunity to EMI, noise, surge and other common industrial environment problems as well as total elimination of both ground loop and shifting ground plane problems. They are capable of full duplex 9600 baud data rates over any two conductor wire (shielded or unshielded/twisted or untwisted) at a range of up to 5 miles or up to 8 miles with the four wire version (please note that Data-Linc can support range requirements of over 100 miles at data rates from 115.2 Kbaud up to 2 Mbaud with its license free radio modems, also including Ethernet interfacing):
- A pair of MDL500 modems are already installed on an instrumentation cable in a tank farm to connect a small Modicon PLC to the Honeywell Advanced Process Manager (APM). The Modicon PLC is a 984-141 and the connection to the Honeywell is the serial interface card in the APM. The MDL500 should be equally compatible with Honeywell DHP, HPM and PLCG or EPLCG.
- In a major chemicals manufacturer, three Modicon 984's are connected via Data-Linc MDL500 remote modems to an MDL500 Master which is connected to a Honeywell HPM. The communications is RS-232 Modbus RTU, operating at 9600 baud with the data superimposed on instrumentation cable.
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