Tonghui TH2512 Operation Manual

TH2512 RS-485 operation manual
The instrument adopts 9600 baud rate without odd-even check， 10-bit asynchronous
communication mode of 1 start bit（0） ，8 data bit and 1 stop bit（1）.
Bus installing instruction： （TO SETUP RS-232 BUS）
A. Turn off TH2512/2512A power，and insert one terminal of RS-485 interface into
RS-232 interface socket on the rear panel of instrument, and the other to the
RS-485 bus.
B. The function of RS-485 interface is available after the instrument being turned on.
Command setup:
The command is the key content of TH2512/TH2512A remote-control which can
control when and how to start testing and send data to bus etc. The command is listed
as below：
RANGE COMMANDS:
R0:Range auto（start value）.
R1～R9: Range 1～9(TH2512:20mΩ bin～2MΩ bin，TH2512A:200Ω bin～200kΩ
bin ，so TH2512A doesn't accept command R1 and R9 ).。
RF: Range hold.
SET COMMANDS:
S0: Slow （start value）.
S1: Fast
S2: Sorting ON.
S3: Sorting OFF （start value）.
S4: Resistance value （start value）.
S5: Percentage deviation value.
S6: Constant trigger（start value）.
S7: Single or external trigger.
S8: Correction ON。
S9: Correction OFF （start value）.
SP：RS232 Print ON
START COMMAND:
G: Start（trigger）
Require Data Command:
？：Query sending the test result.
Limit setup command
Nnnnnn：nominal value，such as：N01900，it means nominal value is 1.900m when the
range is 20m
Lnnn：Low limit value，such as:L090，it means low limit value is -9.0%
Hnnn：High limit value，such as L090，it means high limit value is +9.0%
Note：These command characters can only be expressed by capital letter.
TH2512 RS232
Table A：Related commands
1