Emerson Micro Motion Transmitters and Discrete Controllers Series 3000 Product Data Sheet page 7

Output signals
Fault indication
When a fault is detected, outputs go to configured states. User can select upscale, downscale, internal zero, or none. Milliamp
outputs conform to NAMUR NE43 (June 1994).
Upscale
Downscale
Internal zero
None
Digital communications
RS-485 port
(1)
HART Bell 202
Printer port
(1) Using HART, it is possible to configure basic transmitter functionality, and read/write batch setpoints and totals. Series 3000 batch
applications or enhanced density applications cannot be configured using HART. Using Modbus, all transmitter functionality, batch
commands, and batch applications can be controlled.
continued
Milliamp
Frequency
Milliamp
Frequency
Drives the mA and frequency outputs for process variables to zero values
Ignores fault conditions
One pair of terminals supports SP (service port) mode or RS-485 mode. On device power-up, the
user has 10 seconds to connect in SP mode. After 10 seconds, the terminals switch to RS-485
mode. The communication parameters in SP mode are:
Data rate
Parity
Stop bit
Address
In RS-485 mode, the Series 3000 can communicate via Modbus RTU, Modbus ASCII, or HART
protocols. The communication parameters are configurable with ProLink II software, Modbus, or
the display. The shipped default parameters are:
Data rate
Parity
Stop bit
The RS-485 port can also be configured as a printer port (see below).
The HART Bell 202 signal is superimposed on the primary mA output, and is available for host
system interface. The HART Bell 202 communication parameters are:
Frequency
Amplitude
Data rate
Resistance
The RS-485 port can be configured as a printer port. When the RS-485 port is
configured as a printer port, it cannot be used for any other function.
Requires external RS-232 adapter (not included)
Bidirectional with Epson printer; send only with all other printers and when using a multidrop
configuration
Micro Motion
21 to 24 mA, user configurable
15,000 Hz
1 to 3.6 mA, user configurable
0 Hz
38,400 baud
No parity
One stop bit
111
9600 baud
Odd
One stop bit
1.2 and 2.2 KHz
0.8 mA peak-to-peak
1200 baud
Loop requires 250 to 600 Ohms resistance
®
Series 3000 Transmitters and Discrete Controllers
(1)
7