Anthem LTX-500, Instructions Manual

Page: 52 / 182

6
Others
52
RS-232C Interface
Control of this unit via a computer is possible by connecting the computer to this unit with a RS-232C
cross cable (D-Sub 9 pin).
●
PC refers to the controller such as a personal computer.
D6 D7 D4 D5 D2 D3 D0 D1
Command Format
The command between this unit and the computer consists of
“
Header
”
,
“
Unit ID
”
,
“
Command
”
,
“
Data
”
and
“
End
”
.
●
Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte)
■
Header
This binary code indicates the start of communication.
Binary code Type Description
21 Operating command PC
→
This unit
3F Reference command PC → This unit
40 Response command This unit → PC
06 ACK
This unit
→
PC
(When the command is accepted without error, it returns to
PC)
■
Unit ID
This code speci fi es the unit. The binary code is fi xed at
“
8901
”
.
RS-232C Specifi cations
Pin No. Signal Function Signal Direction
2 RxD Receive data PC
→
This unit
3 TxD Transmit data This unit → PC
5 GND Signal ground
-
1,4,6 - 9 N/C
- -
Mode
Non-synchronous
Character Length
8 bit
Parity
None
Start Bit 1
Stop Bit
1
Data rate
19200 bps
Data format
Binary
T his unit
Start Bit Stop Bit