SMC Networks ITV23 Series Operation Manual page 8

Process data output: 2byte [PLC - E-P Regulator]
The product adjusts the pressure to the set value.
15 14 13 12
* Data is adjustable up to 120%F.S. (However, the warranty range is up to 100% F.S.)
Pressure setting mode.
The pressure can be set by sending input data with a full span of 12-bit from the PLC to the
electro-pneumatic regulator. Values outside the specification range (including 13-bit to 15- bit)
are recognized as large values and may cause [Er.1], so please do not use them.
<Relationship between the set pressure (16-bit) and output pressure>
Output pressure value
Output pressure
Input data shall be entered from 0 to 12-bit of the 16-bit process data (2 byte).
(Ex.) When the output pressure is 100%, the set pressure value is 0x0FFF.
(Calculation example 1)
Part number：ITV2340-□□ (Pressure range 0.7MPa)
When you want to set to 0.5 MPa (12bit = 4095 divisions)
0.7 = 4095 ： 0.5 = ●●
●● = 4095/0.7×0.5 = 2925
Convert 2925 to hexadecimal → Set pressure value：0 x 0B6D
(Calculation example 2)
Part number：ITV2350-□□ (Pressure range 0.9MPa)
When you want to set to 0.5 MPa (12bit = 4095 divisions)
0.9 = 4095 ： 0.5 = ●●
●● = 4095/0.9×0.5 = 2275
Convert 2275 to hexadecimal → Set pressure value：0 x 08E3
0
11 10 9
Set pressure value (16-bit)
0 x 0000
0%
8 7 6 5
0 x 0FFF
100%
(When F_1=0%F.S. and F_2=100%F.S.）
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1
4 3 2 1
byte
0 bit
value