Pc/External Control Function; Command Reference - NEC XM37 User Manual

PC/External Control Function

PC/External Control Port Pin Assignments
D-SUB 15pin (Input/Output)
Pin No. Signal Name
No Connection
1
Receive Data
6
No Connection
2
Transimit Data
7
No Connection
11
Clear to Send
12
No Connection
3
Request to Send
8
Ground
9
Input Select
4
Input Select
5
Power ON/OFF
10
No Connection
13
Degauss ON/OFF
14
Signal Ground
15

Command reference

You can control the main functions from external equipment such as personal
computer using the PC/EXT CTL terminals. The following sections explain the
interface.
Interface Condition
• RS-232C
• Baud rate ------------------------- 9600 bps
• Data length ----------------------- 8 bits
• Parity ------------------------------- Odd parity
• Stop bit ---------------------------- 1 bit
• Communications mode -------- Full duplex
NOTE: If EXT.CTL is set to ON, only EXT.CTL will be effective for the
functions :Input selection, Power ON/OFF and Degauss ON/OFF.
If EXT.CTL is set to OFF, PC CTL will be effective. Pin No.8 is
connected to pin No. 12.
External Control
Pin No.
VIDEO1
VIDEO2
RGB1
EXT-CTL
RGB2
EXT-CTL
POWER OFF
EXT-CTL
POWER ON
DEGAUSS OFF
EXT-CTL
DEGAUSS ON
Control Data Format
8bit 8bit
Command 1
Command 1 ........ Code based on the command system
UNIT ID ............... Code allocated to each equipment (Allocate 80H to the
Command 2 ......... Code allocated to the main functions of the XP37 Plus/XM37
Data Length ........ Number of bytes of the data that is transmitted
Data .................... Data transmitted
Check Sum ......... Lower eight digits of sum total of the first byte to the byte
2
5 4 3 1
10 9 8 7 6
15 14 13 12
11
4 5
OPEN OPEN
GND OPEN
OPEN GND
GND GND
- -
- -
- -
- -
8bit 8bit 8bit 8bit
Data
Data length
Command 2
UNIT ID
XP37 Plus/XM37 Plus)
Plus
immediately before the last.
41
10 14
- -
- -
- -
- -
OPEN -
GND -
- OPEN
- GND
8bit 8bit
Check Sun
42
8