IRMCS2033

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RS232C connector

IRMCS2033 has one serial RS232C connector (J6) on the board. The connector is a D-sub 9 pin standard PC

female connector and directly connectable to a PC serial port. As shown in Figure 6, pin 2 is the send signal and

pin 3 is the receive signal; both are 10V signal level. The baud rate is fixed at 57.6kbps. The signal format is 8 bits,

no parity, 1 stop bit configuration.

J6

DB9RF

1

2

3

4

5

6

7

8

9

No connection

RX1

TX1

Figure 6. 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 the IRMCK203 Application

Developer’s Guide.

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