IRMCS2031

RS232C connector

IRMCS2031 has one serial RS232C connector (J6) on the board. The connector is D-sub 9 pin standard PC female

connector and directly connectable to PC serial port. As shown in Figure 8, pin2 is send signal and pin3 is receive

signal, and both are 10V signal level. The baud rate is fixed at 57.6kbps. The signal format is 8bit, no parity, 1 stop

bit configuration.

J6

DB9RF

1

2

3

4

5

6

7

8

9

No connection

RX1

TX1

Figure 5. RS232C connector

RS-232 Register Access

The IRMCK203 includes an RS-232 interface channel that provides a direct connection to the host PC. The software

interface combines a basic "register map" control interface with a simple communication protocol to accommodate

potential communication errors. For more detailed information, please refer to IRMCx201 Application Development

Guide.doc

RS-232 Register Write Access

A Register write operation consists of a command/address byte, byte count, register data and checksum. When the

IRMCK203 receives the register data, it validates the checksum, writes the register data, and transmits and

acknowledgement to the host.

Command / Address Byte

Byte Count

1-6 bytes of register data

Checksum

Register Write Operation

Command Acknowledgement Byte

Checksum

Register Write Acknowledgement

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