Emerson Series 3000 MVD Manuel D’Utilisation
16
Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Digital Communications Setup
You may also order the IC521A-F signal converter with a ticket printer. Contact Micro Motion for the
appropriate ETO (engineered-to-order) number.
appropriate ETO (engineered-to-order) number.
Depending on your remote device, you may also need a 9-pin to 25-pin adapter.
Note: The ProLink PC Interface Adaptor (PCIA) cannot be used with the Series 3000 device. Because
the PCIA does not control the ready-to-send (RTS) line, communication between the Series 3000
device and the remote device cannot be initiated.
the PCIA does not control the ready-to-send (RTS) line, communication between the Series 3000
device and the remote device cannot be initiated.
Other conversion
If you need to convert the RS-485 signal to another signal, you must supply the appropriate signal
converter.
converter.
3.2.3
Bell 202 signal converter
RS-232 conversion
If you need to convert the Bell 202 signal to an RS-232 signal, as used by a PC’s serial port, signal
converters are available from Micro Motion (part number PLKUSB202KIT or PLK202KIT). Contact
Micro Motion for information about ordering these converters.
converters are available from Micro Motion (part number PLKUSB202KIT or PLK202KIT). Contact
Micro Motion for information about ordering these converters.
You may also need a Bell 202 cable or a 9-pin to 25-pin adapter.
Other conversion
If you need to convert the Bell 202 signal to another signal, you must supply the appropriate signal
converter or HART interface.
converter or HART interface.
3.3
Setting up RS-485 communications
Follow the steps below to set up RS-485 communications between the Series 3000 device and a
remote device.
remote device.
1. Locate and identify the RS-485 terminals on the Series 3000 device. Refer to Table 3-2 and
Figure 2-2. Additionally, the Series 3000 device has a label or card that shows input/output
wiring terminal designations. See Figure 2-3.
wiring terminal designations. See Figure 2-3.
Note: The terminals labeled Comm 1, Comm 2, and Comm 3 are not for I/O wiring. These terminals
are for Micro Motion internal use only.
are for Micro Motion internal use only.
Table 3-2
RS-485 wiring terminals
Model
RS-485 terminals location/description
RS-485 terminals
A
B
Model 3300 or Model 3500 with
screw-type or solder-tail connectors
screw-type or solder-tail connectors
Input/output wiring terminal block
a 32
c 32
Model 3300 or Model 3500 with
I/O cable
I/O cable
I/O terminal block on DIN rail
25
24
Model 3350 or Model 3700
Gray terminal block, non-intrinsically safe wiring
compartment
compartment
12
11