Service Manual
I4X/EN CO/D
ISTAT I4X
Page 11
7.
INTRODUCTION
7.1
General
The iSTAT I4X is a range of communications Interfaces were primarily designed for use with
communicating ISTAT Measurement Transducers or Measurement Centres, but can be used
with other communicating devices, i.e. Micom Relays.
There are three different versions of the I4X, these convert the following signals:
EIA (RS)232 to EIA (RS)485 (2-wire)
Ethernet to EIA (RS)232
Ethernet to EIA (RS)485 (2-wire)
7.2
iSTAT I4X Family
The iSTAT I4X family consists of 3 products
7.2.1
EIA (RS)232 to EIA (RS)485 (2-wire)
The RS232 to RS485 converter is bi-directional; the
‘Master’ unit can be connected to either
the RS232 or RS485 port.
The unit works with any protocol which can be transmitted over both RS232 and RS485 2-
wire systems.
The use of digital technology achieves high reliability over a wide data speed range of 1200
to 115200 bits per second.
7.2.2
Ethernet to EIA (RS)232
The Ethernet to RS232 interface is uni-directional; the
‘Master’ unit must be connected to the
Ethernet port.
The unit works with the Modbus RTU protocol over RS232 and Ethernet.
The use of digital technology achieves high reliability over a wide data speed range of 1200
to 115200 bits per second for the RS232 port.
7.2.3
Ethernet to EIA (RS)485 (2-wire)
The Ethernet to RS485 interface is uni-directional; the
‘Master’ unit must be connected to the
Ethernet port.
The unit works with the Modbus RTU protocol over RS485 and Ethernet.
The use of digital technology achieves high reliability over a wide data speed range of 1200
to 115200 bits per second for the RS485 port.
