5.7 Command Formats
The following conditions are assumed in the examples of this section.
1. The recognition character is the asterisk (*).
2. The meter use RS-232 interface standard (point-to-point communication).
3. When “W” command is given, a reset is necessary to initiate the command.
4. Each byte consist of 8 bits.
5. “ “ (blank) in bit pattern information means the bit is not applicable to that parameter.
Note that all ranges have been given decimal numbers. To make a data
command, the decimal numbers converted into a hex numbers and then the
digits of that hex number are encoded into their equivalent ASCII values.
5.7.1 Input Type (Command Index 07)
Description: INPUT.76543210 means 8 bit positions of the Command Data.
5.7.1.1 Input Type Format for Temperature/Process Instrument
BIT POSITION INPUT CLASS, RANGE
7 6 5 4 3 2 1 0 OR TYPE
0 0 TC (Thermocouple)
01 RTD
1 0 PROCESS
TC/ RTD/ PROCESS
0000 J/ 392.2/ 0-100 mV
0001 K/ 392.3/ 0-1 V
0010 T/ 392.4/ 0-10 V
0011 E/ 385.2/ 0-20 mA
0100 N
0101 DIN-J/ 385.4
0110 R
0111 S
1000 B/ xx/ xx
1001 C/ xx/ xx
1100 xx/ 385.3/ xx
0 0 100 ohm RTD
0 1 500 ohm RTD
1 0 1000 ohm RTD
Example: Set RTD, 4 wire, .0392 Curve, 100 ohms.
The command data is 00001001 Bin = 09HEX. Send: *W0709
Send a Read command first to determine the bits, which are not specified for
some positions (TC and Process for positions 7,6 above).
22
To Next Page
Loading...
Need help?
General
