APPENDIX (IDC-3000 stand alone PC-CONTROL command reference)
You can control the main functions from external equipment such as
personal computer using the PC-CONTROL terminal. The following
sections explain the interface.
Interface Condition
• RS-232C or RS-422
• Baud rate............................... 9600 bps
• Data length............................ 8 bits
• Parity..................................... Odd parity
• Stop bit.................................. 1 bit
• Communications mode .........Full duplex
• Command 1 ........Code based on the command system
• UNIT ID............. Code allocated to each equipment
(Allocate 20H to the IDC-3000)
• Command 2 ........Code allocated to the main functions of the IDC-3000
• Data Length........ Number of bytes of the data that is transmitted
• Data ....................Data that is transmitted
• Check Sum .........Lower eight digits of sum total of the first byte to the
byte just before the last
Control Data Format
8 bit 8 bit 8 bit 8 bit 8 bit 8 bit 8 bit
Check Sum
Data
Data length
Command 2
UNIT ID
Command 1
Z
8 bit
Command Communication Sequence
When external equipment such as a personal computer gives the command to
the IDC-3000, the IDC-3000 returns an ACK or NAK. So make sure that the
external equipment receives this ACK or NAK.
External equipment
(PC) IDC-3000
→
←
ACK or NAK
(NAK only when accessing EEPROM)
Command sending/receiving sequence
Command
The IDC-3000 returns an ACK if it has received the command correctly.
If it has not received the command correctly due to data error, it will return a
nothing. Therefore, when the external equipment send a command, make sure
that it received the ACK.
The IDC-3000 returns a NAK only when a WRITE error has occurred during
EEPROM access commands.