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Product Name: SIM Relay Card
Product Description
Automatic Self-Test
A logic only Self-Test is invoked at power on and may also be operated under
software command. Self-Test pass is indicated on a PCB mounted LED with a full
pass/fail description available via either the I2C or RS-232 interfaces.
Connections
All control and signal lines are made using the 72 way SIM connector. There is
also a 4-pin plug for connection to the I2C or RS-232 interface. Other connector
types may be available.
Software Support
The SIM Relay Cards have a simple ASCII control language (the same commands work
with either I2C or RS-232). Pickering also have drivers available to assist with
software development and debugging for NI LabView.
Microcontroller Based Design
The SIM Relay Card has a built-in single chip microcontroller. Each SIM Relay
Card has a standard hardware selectable I2C or RS-232 interface with read/write
capability. Leaded reed relays are used throughout to simplify maintenance
operations.
I2C Communication
The SIM Relay Card uses a message based method of communication with the
controller, all data is exchanged through a single read/write register. A DIP
switch is provided for I2C addressing. This controls addressing bits 4 to 1, in
addition jumpers are available for bits 5 to 7 (if required). All 7 address bits
are also available on the SIM connector, allowing the I2C address to be read
from the motherboard.
RS-232 Port
The SIM Relay Card can alternatively be configured with an RS-232 port (9600
baud, 8 bit, no parity, no handshaking). This is provided on a 4 pin Molex type
connector (a jumper on the PCB selects RS-232 or I2C use for this port). A
separate adapter lead to allow use with a standard 9 pin D-type is available.
The RS-232 port allows the SIM Relay Card to be controlled and monitored from
any RS-232 terminal.
RS-232 to I2C Converter Module
The RS-232 to I2C converter 1080-001
allows control of multiple relay cards that are set for I2C operation. Like the
relay cards, the module uses the SIM card mechanical profile
Company Details
- January 1968. Pickering Electronics started by John Moore to design and
manufacture high quality reed relays for use by Original Equipment
Manufacturer's in switching systems.
- 1973. Pickering Electronics are... more
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