Setting Command
Section 5-6
5-46
5-6-11 Terminal Resistance Setting Command (TM)
This command sets and reads the terminal resistance (for RS-485).
<Command Format>
STX
Node No.
Command
code
"TM"
Terminal
specifi-
cation
ETX BCC
1 2
2 1
1
1
Terminal
specification
Specify the value, 0 or 1, that corresponds to the terminal resistance that
you want to change.
Specification range: 0, 1, or *
When * is specified, the Reader/Writer reads the current setting.
Specification number
0
1
*
OFF ON -
<Response Format>
STX Node
No. Retry
flag
Command
code
"TM"
Response
code
"00"
Terminal
setting
E
T
X
BCC
1 2 1 2
2 1
1
1
Response code
00: Normal completion
For other response codes, refer to 5-10 Response Code List.
Terminal setting
Indicates the setting corresponding to the specified terminal resistance in
decimal.
Note
•
The setting becomes effective after resetting using the Reset Command.
•
In order to make your setting survive system shutdown, you need to save
the Setting Write Command (refer to EW Command in 10, 5-2-4) in the
EEPROM.