Sharp PN-T322B Service Manual - Page 28

Controlling The Monitor With A Pc, 1. Rs-232c

Get Sharp PN-T322B PDF manuals and user guides View all Sharp PN-T322B manuals
Add to My Manuals
Save this manual to your list of manuals

Page 28 highlights

CHAPTER 3. CONTROLLING THE MONITOR WITH A PC 1. RS-232C You can control this monitor from a PC via RS-232C (COM port) on the PC.You can also connect multiple monitors via a daisy chain by using a PC. 1 - 1. COMMUNICATION CONDITIONS Set the RS-232C communication settings on the PC to match the monitor's communication settings as follows. Baud rate Data length Parity bit Stop bit Flow control 9600bps 8 bits None 1 bit None 1 - 2. COMMUNICATION PROCEDURE (BASIC OPERATION) ■ COMMAND FORMAT When a command is sent from the PC to the monitor, the monitor operates according to the received command and sends a response message to the PC. Return code C1 C2 C3 C4 P1 P2 P3 P4 Command field Parameter field (4 prescribed (4 character string comprised of: alphanumerical characters) 0-9, +, -, space, ?) If a command has "R" listed for "DIRECTION" in the "RS-232C command table", the current value can be returned by using "?" as the parameter. Example VOLM ? ? ? ? 30 From PC to monitor. (How much is current volume setting?). From monitor to PC. (Current volume setting: "30"). Example VOLM0030 VOLM 30 Be sure to input 4 characters for the parameter. Pad with spaces (" ") if necessary. (" " is a return code (0DH, 0AH or 0DH)) Wrong : VOLM30 . Right : VOLM 30 . PN-T321/T322B CONTROLLING THE MONITOR WITH A PC 3 - 1

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
PN-T321/T322B
CONTROLLING THE MONITOR WITH A PC
3 – 1
CHAPTER 3.
CONTROLLING THE MONITOR WITH A PC
1.
RS-232C
You can control this monitor from a PC via RS-232C (COM port) on the PC.You can also connect multiple monitors via a daisy chain by using a PC.
1 - 1.
COMMUNICATION CONDITIONS
Set the RS-232C communication settings on the PC to match the monitor’s communication settings as follows.
1 - 2.
COMMUNICATION PROCEDURE (BASIC OPERATION)
■
COMMAND FORMAT
When a command is sent from the PC to the monitor, the monitor oper-
ates according to the received command and sends a response mes-
sage to the PC.
If a command has “R” listed for “DIRECTION” in the “RS-232C com-
mand table”, the current value can be returned by using “?” as the
parameter.
Baud rate
9600bps
Data length
8 bits
Parity bit
None
Stop bit
1 bit
Flow control
None
Return code
Command field
(4 prescribed
alphanumerical characters)
Parameter field
(4 character string comprised of:
0-
9
, +, -, space, ?)
C1
C2
C3
C4
P1
P2
P3
P4
VOLM0030
VOLM
30
Example
Be sure to input 4 characters for the parameter.
Pad with spaces ("
") if necessary.
("
" is a return code (0D
H
, 0A
H
or 0D
H
))
Wrong : VOLM30
Right : VOLM
30
VOLM ? ? ? ?
30
Example
From PC to monitor.
(How much is current
volume setting?).
From monitor to PC.
(Current volume
setting: "30").