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11-6. Transmission Mode
You can switch between the transmission mode 0 and the
transmission mode 1 by changing the transmission mode
setting explained in the section 11-4. “Setting RS-232C
interface.”
11-6-1. Transmission mode 0
In the transmission mode 0, a computer or similar device sends
a command to load a reading, statuses, and set values from or
to save set values into the TD-260T.
11-6-2. Transmission mode 1
In the transmission mode 1, the TD-260T continuously
transmits readings and statuses.
11-7. Format for transmission mode 0
A host computer sends data called Request to the TD-260T,
and then the TD-260T sends data called Response back to the
host computer. Request and Response use ASCII characters
except for CR and LF.
(CR: Carriage Return (0x0D), LF: Line Field (0x0A))
11-7-1. Read displayed-reading command (RA)
Request
R A CR
Response
R A ± 1 0 0 . 0 0 CR LF
Sign bit
Plus:
+
Minus:
-
Reading
11-7-2. Read status command (RS)
Request
R S CR
Response
R S 0 0 0 0 0 0 0 0 CR LF
Hold
output
0: OFF
1: ON
Stable
output
0: OFF
1: ON
Near zero
output
0: OFF
1: ON
HI decision
output
0: OFF
1: ON
OK Output
0: OFF
1: ON
LO
decision
output
0: OFF
1: ON
HH
decision
output
0: OFF
1: ON
LL decision
output
0: OFF
1: ON
TD-250T compatible command (RD)
Request
R D CR
Response
R D 0 0 0 0 0 0 0 CR LF
Hold
output
signal
0: OFF
1: ON
Stable
output
signal
0: OFF
1: ON
Near zero
output
signal
0: OFF
1: ON
HI decision
output
0: OFF
1: ON
OK output
0: OFF
1: ON
LO
decision
output
0: OFF
1: ON
Reserved
11. RS-232C Interface (TD-260T AC(232C) / TD-260T DC(232C))