Filter
Top Products
Quick Start Guide
3
May 2014
Step 1: Configure (bench calibration)
The 644 communicates using the field communicator (communication requires a
loop resistance between 250 and 1100 ohms. Do not operate when power is
below 12 Vdc at the transmitter terminal). Refer to the 644 Reference Manual
(document number 00809-0100-4728) and the Field Communicator Reference
Manual (document number 00809-0100-4275) for more information.
Update the field communicator software
The field communicator Field Device Revision Dev v6, DD v1 or higher is required
for complete functionality. The device will communicate with all previous 644 DD
revisions.
Perform the following steps to determine if an upgrade is required.
1. Connect the sensor (see the wiring diagram located on the inside of the
housing cover).
2. Connect the bench power supply to the power terminals (“+” or “–”).
3. Connect a field communicator to the loop across a loop resistor or at the
power/signal terminals on the transmitter.
4. The following message will appear if the communicator has a previous version
of the device descriptors (DDs).
Note
If this notice does not appear, the latest DD is installed. If the latest version is not available, the
communicator will communicate properly. But, when the transmitter is configured to utilize the
advanced features of the transmitter (such as one of the added sensor input types), the user will
experience trouble communicating and will be prompted to turn the communicator off. To prevent
this from happening, upgrade to the latest DD or answer NO to the question and default to the
generic transmitter functionality.
Figure 1. Connecting a Communicator to a Bench Loop
NOTICE
Upgrade the communicator software to access new XMTR functions. Continue with old
description?
644 Head Mount Transmitter 644 Rail Mount Transmitter
A. 250 ⍀ R
L
1100 ⍀ C. Field communicator
B. AMS D. Power supply
A
D
C
B
A
D
C
B