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The 900-MHz frequency-hopping RS485 Master/Slave auto-sensing radio interface
Transceivers
GCTZR-MA
900-MHz frequency-hopping RS485 Master/Slave auto-sensing radio
interface
Main Features
RS485 Master/Slave auto-sensing radio interface
Built in 900 MHz. frequency hopping radio for long-range wireless
interface
Provides remote capability to RS485 Modbus networks
Automatically senses Master or Slave data flow
Multiple radios allow many remote RS485 network to coexist logically
Provides means to convert legacy RS485 devices to wireless
Range Indoor: 600� to 1300�
Range Outdoor: 7mi. with dipole, >20 mi. w/ high gain antenna
LED power and activity indicator
Configuration parameters set by dipswitch
Low power, 6-24 VDC at 200 milliamp transmitting, 70 milliamp
receiving
Astron AXH900RP SMA R Reverse Polarity SMA 6.5� Antenna
High Impact ABS enclosure
Description:
The GCTZR-MA uses an embedded 100-milliwatt frequency hopping
wireless modem that provides communication between a local RS485
network and a remote network of RS485 connected devices. T he
TZR-MA will automatically sense the direction of data flow and
switch the RS485 and Radio devices accordingly. The TZR-MA can be
placed in a network of RS485 devices and appear as a slave repeater
of remote RS485 devices or it can be placed in a network of one or
many RS485 slaves and act as the RS485 repeater of a remote master.
The radio operates within the 900 MHz ISM Band under Part 15 of the
FCC Rules and regulations.
The GCTZR-MA operates at 19200 Baud at either odd parity or no
parity. Dipswitches select parity and one of 7 radio networks.
Radios operating together must have the same radio network address
(1-7 set by switches labeled A0-A2) Select a different radio network
address to prevent interference from nearby networks that are not
sharing information. The default radio network for Rooftop
applications is 5. The user may choose another network address (1-7)
if desired. While all radios in a network must have the same network
address they do not have to have the same parity, the parity is
local to the RS485 serial port on the GCTZR-MA only. Parity
information is not transmitted or received.
Radio network selection 0(A0, A1, A2 all set to 0)selects a special
network setup. When network address setting 0 is selected the
pre-programmed radio network parameters are used, these parameters
are user and application specific and must be set at the factory for
specific OEM applications.
The GCTZR-MA can also be used as a general purpose RS485 half duplex
radio interface operating at 19200 Baud at either odd or no parity
(dip switch selectable).
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Technical Features:
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PARAMETER |
MIN |
TYP |
MAX |
UNITS |
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Supply Voltage |
6.0 |
12 |
24 |
Volts |
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Supply Current |
70 |
- |
200 |
mA |
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Baud Rate |
- |
19200 |
- |
Baud |
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 Note:
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