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User Manual EE741 Inline Flow Sensor for Compressed Air and Gases
5.2.3 IO-Link
Communication specification
Manufacturer ID 0563
hex
/ 1379
dec
Device IDs
EE741 DN15 to DN25:
EE741 DN15 to DN25 : 0x074111 475409 d
EE741 DN32 to DN50:
EE741 DN32 to DN50 : 0x074112 475409 d
Bitrate COM2
(38.4 kBaud)
Minimum cycle time
6.0 ms
SIO mode supported no
Process data input length
12 bytes
IO-Link Revision 1.1
Required masterport class A
Structure of process data input
The Process Data Input (the measured data of EE741) is configurable and structured in the
following order:
Bit no.
95 64 63 32 31 0
Process data input
Measurand 1
Measurand 2
Measurand 3
Measurand index,
factory default
acc. to Tab. 2
80
Mass flow m'
[kg/h]
83
Standard volume flow V'n
[m
3
/h]
1
Temperature T
[°C]
Tab. 1
Scheme of process data input
Per factory default, the measurands’ data type is FLOAT32 (more exactly, 32-bit single precision
float). The parameters may freely be selected via IO-Link device parameter, the most usual are
pre-selected per default. See Tab. 2 for the supported measurands.
Alternatively, the measured data may be represented as INTEGER32 within the above scheme,
the values are scaled with a factor 1 000 in this case.
Please note that the data type selection (FLOAT32 or INTEGER32) applies to the entire 12 byte
process data input, i.e., all 3 measureands will have the same data type at the same time.
Measurand description
Formula sign
Unit
Measurand index
Temperature
T
°C
1
°F
2
K
4
Standard flow
vn
m/s
22
ft/min
23
Mass flow
m'
kg/h
80
kg/min
81
kg/s
82
Standard volume flow
V'n
m
3
/h
83
m
3
/min
84
SLPM
85
l/s
86
SCFM
87
m
3
/s
88
Consumption
Qn
m
3
91
ft
3
93
Tab. 2
Indices of supported measurands
