Renu Electronics Gateway, Quick Start Manual, Page: 22 / 25

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4.3 Error Indication Bit
This feature enables user to detect communication break, wire faults, Device
power fail etc. at both ends of gateway. This is physical bit present in external
device connected to gateway. Fault at com1 end is reported to com2 Device and
fault at com2 end is reported to com1 Device by setting the bit in external device
(Gateway sets this bit when error occurs).
Error indication bit can be enable or disable while configuration of Gateway using
Configuration Software. Normally Error indication bit is disable. It can enable just
by clicking on check box in setup software. Error indication bit can be enabled or
disable in any of the Device connected to gateway.
Normally this bit is “OFF”, in case of abnormality in communication. This
bit is set to “ON” by gateway , so that external device can know the problem.
This useful to operator to take necessary action and avoid production losses.
4.4 Selectable Communication Parameters
Normally Gateway communicates with external devices with there default
Communication Parameters. Selectable Communication Parameters for
Communication Ports is very useful feature in Gateway, which allows user to
change Baud rate, no. of stop bits, Parity etc. at any time without downloading
Driver for that particular Device. Once you downloaded the driver for the external
Device, you can change Communication Parameter, just by selecting new
communication parameters and downloading the same project.
4.5 LEDs for Communication Status
Gateway has 3 LEDs on topside, which are useful for user to see communication
status and gateway mode.
COM1 LED
Blinking of this LED indicates Communication is happening with Com1 Device.
If Com1 LED is not blinking then it indicates that, Com1 Device is not
responding, no power to Com1 Device or Communication Cable Fault. This may
also happen in case of invalid baud rate or Communication Parameters.
OK LED
When Configuration Cable is connected, and power is applied to Gateway, this
led will blink at fast rate, indicates that Gateway is ready for configuration.