JZ-RS4
Unitronics
3
MJ20-RS
Jazz
®
Add-on Module
RS232/RS485 Communication Port
MJ20-RS Technical Specifications
Communication
1 channel
Galvanic isolation
Yes
Baud rate
300, 600, 1200, 2400, 4800, 9600, 19200 bps
RS232
1 port
Input voltage
±
20VDC absolute maximum
Cable length
3m maximum (10 feet)
RS485
1 port
Input voltage
-7 to +12VDC differential maximum
Cable type
Shielded twisted pair, in compliance with EIA RS485
Nodes
Up to 32
Environmental
Operating temperature
0
to 50
C (32
to 122
F)
Storage temperature
-20
to 60
C (-4
to 140
F)
Relative Humidity (RH)
10% to 95% (non-condensing)
Dimensions
20 mm (0.787")
38
m
m
(1.
496")
71 mm (2.795")
Weight
30g (1.06oz.)
RS232 Pinout
MJ20-RS RJ11 connector
Pin #
Description
Pin #1
1
DTR signal
2
GND
3
TXD
4
RXD
5
GND
6
DSR signal
The information in this document reflects products at the date of printing. Unitronics reserves the right, subject to all applicable laws, at any time, at its sole discretion, and without notice,
to discontinue or change the features, designs, materials and other specifications of its products, and to either permanently or temporarily withdraw any of the forgoing from the market.
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for a particular purpose, or non-infringement. Unitronics assumes no responsibility for errors or omissions in the information presented in this document. In no event shall Unitronics be
liable for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever arising out of or in connection with the use or performance of this information.
The tradenames, trademarks, logos and service marks presented in this document, including their design, are the property of Unitronics (1989) (R"G) Ltd. or other third parties and you are
not permitted to use them without the prior written consent of Unitronics or such third party as may own them
UG_JZ-RS4 07/22
