Emerson MICRO MOTION 2700 Manuel d'installation Page 26

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16 Transmitter Configuration and Use: Series 1000 and 2000 Transmitters
Connecting with ProLink II Software continued
10. If an error message appears:
a. Swap the leads and try again.
b. You may be using incorrect connection parameters.
- Ensure you are using the correct COM port.
- Connect using the service port and check the RS-485 configuration. If required,
change the configuration or change your RS-485 connection parameters to match the
existing configuration.
- If you are unsure of the transmitter’s address. use the
Poll button in the Connect
window to return a list of all devices on the network.
c. Check all the wiring between the PC and the network. You may need to add resistance. See
Figure 3-3.
3.4.3 Connecting to the primary mA terminals or to a HART multidrop network
To connect a PC to the primary mA terminals or to a HART multidrop network:
1. If you are connecting to an AN or CIO transmitter, see Figure 3-4. If you are connecting to an
IS transmitter, see Figure 3-5.
2. Attach the HART interface to the serial port of your PC.
3. To connect to the primary mA terminals, open the cover to the intrinsically safe wiring
compartment and connect the HART interface leads to the terminals labeled
1 and 2, or to the
output wires from these terminals.
4. To connect to a HART multidrop network, connect the HART interface leads to any point on
the network.
CAUTION
Connecting a HART device to the transmitter’s
primary mA output terminals could cause transmitter
output error.
If the primary mA output is being used for flow control,
connecting a HART interface to the output loop could
cause the transmitter’s 4–20 mA output to change, which
would affect flow control devices.
Set control devices for manual operation before
connecting a HART interface to the transmitter’s primary
mA output loop.
Model 1700 AN
Model 1700 IS
Model 2700 AN
Model 2700 IS
Model 2700 CIO
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