Pc-Control Command Reference - NEC IPS-4000 User Manual

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PC-CONTROL COMMAND REFERENCE

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You can control the main functions from external equipment such as personal computer using the REMOTE 1 terminal. The
following sections explain the interface.
Interface Condition
•
RS-232C or RS-422
•
Baund rate .................................. 9600 bps
•
Data length ................................. 8 bits
•
Parity ........................................... Odd parity
•
Stop bit ........................................ 1 bit
•
Communications mode ............... Full duplex
Control Data Format
8 bit 8 bit
Command 1
•
Command 1 .............. Code based on the command system
•
UNIT ID ..................... Code allocated to each equipment (Allocate 20H to the IPS-4000/4000Q)
•
Command 2 .............. Code allocated to the main functions of the IPS-4000/4000Q
•
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
Command Communication Sequence
When external equipment such as a personal computer gives the command to the
IPS-4000/4000Q, the IPS-4000/4000Q returns an ACK. So make sure that the
external equipment receives this ACK.
External equipment
(PC)
The IPS-4000/4000Q 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 nothing.
Therefore, when the external equipment sends a command, make sure that it
receives the ACK.
8 bit 8 bit
Command 2
UNIT ID
Command sending / receiving sequence
Command
ACK
8 bit 8 bit
Data
Data Length
34
8 bit 8 bit
Check Sum
IPS-4000/4000Q