The 1700M Modbus series digital I/O
series modules provide computer monitoring of digital input and
digital output signals for control of industrial devices through solid
state relays.
The D1700M digital I/O modules
allow a single host computer to control thousands of I/O points from one serial
port using RS-485 and repeaters in Modbus RTU format. When using RS-232 in
Modbus format you are limited to one board or module.
The digital inputs accept a wide signal level input, up to +30Vdc without damage, and
have TTL logic input switching levels.
The digital outputs are open-collector transistors will sink: 30mA
(D1701/D1702), 100mA (D1711/D1712) making them ideal for controlling
solid state relays. The status of digital inputs and digital outputs
are communicated to any host serial port in ASCII using either RS-232
or RS-485.
The D1711M and D1712M contain an onboard events counter that counts up to 10
million transitions that occur on the digital input. The event counter may
be read and cleared by the host computer at any time.
The D1700 and D1700M digital I/O modules
can also be mounted on a DIN-Rail using the MK-1
mounting kit.
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The H1700M digital I/O boards provide direct interface to industry
standard mounting racks and solid-state relays. Industry standard 24 relay mounting racks
can be controlled directly with the H1750M or H1770M digital I/O boards.
The D1700M digital I/O boards allow a host
computer to control thousands of digital I/O points from one serial
port. The H1750M contains 24-bits of user-selectable Inputs and
Outputs. The H1770M contains 64-bits of user-selectable Inputs and
Outputs.
The digital inputs accept signals up to +0-5Vdc without damage and
have TTL logic input switching levels. The digital outputs are
open-collector transistors will sink: 15mA making them ideal for
controlling solid state relays. The status of digital inputs and
digital outputs are communicated to any host serial port in ASCII
using either RS-232 or RS-485.
The H1700M
digital I/O boards are similar to the H1700 Series but
communicates using the Modbus RTU protocol.
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Many industrial applications require a 'safe' start-up condition to prevent
accidents at critical points in the process. Each 1700M contains an
initial start-up value which is used to configure the digital outputs on
power up. The initial value is use selectable and stored in EEPROM. Since
each digital output is automatically configured on start-up, no software
initialization routines are required.
The 1700M series contains a user- programmable software timer to provide an
orderly shutdown of the output signal in the event of host computer or
communications failure.
The H1700M digital I/O boards provide direct interface to industry
standard mounting racks and solid-state relays. Industry standard 24 relay mounting racks
can be controlled directly with the H1750M or H1770M digital I/O boards.
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| D1701M, D1702M Modules |
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| D1711M, D1712M Modules |
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| H1750M, H1770M Boards |
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