22
Remote I/O Installation and Programming Manual
4.5
Read Tare Value
The Read Tare Value block write command is used to read a tare value from the indicator. Table 4-12 shows the
format of the command:
Table 4-12. Block Write Command 7: Read Tare Value
Command Number
Specifies the Set Tare Value command number, 7.
Channel Number
Specifies the channel number for the tare value being read. Specify channel 1 for IQ plus 510/710 indicators.
Block read command 7 returns a 2-word tare value to the PLC controller. If the block write command failed, the
command number returned in word 0 is set negative (-7). Table 4-13 shows the format of the block read
command.
Table 4-13. Block Read Command 7: Read Tare Value
Word
Bit Number
Word Contents
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
Command Number (7)
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Channel Number (1)
Word
Bit Number
Word Contents
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
Command Number (7)
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Channel Number (1)
2
v31
Tare Value
v16
Tare Value (MSW)
3
v15
v00
Tare Value (LSW)
DISCONTINUED
