4-2
4.1 Starting Communication
■ Before starting communication
Confirm the following points before starting communication.
• Electrical wiring of the device is completed (see the “Wiring method” below).
• There is an input signal from the controller (constant-current supply).
Note
If there is no 4 to 20 mA DC signal from the controller, connect a constant-current
supply (3.85 to 21.5 mA DC) to the input signal terminal. When doing so, be sure to re-
move the wires coming from the controller off of the terminals.
Wiring method
■ Introduction
The wiring method for communicating with this device will now be described.
• With HART® communication
Figure 4-1. Wiring of HART® Communication Tool (Model AVP302)
• With SFN communication
Figure 4-2. Wiring with CommStaff (Model AVP300/302)
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