Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 13)

<3. ABOUT FIELDBUS>
3-2
IM 11M12D01-61E
(5) MAI function block
• Each of these corresponds to the oxygen concentration signal output.
(6) MAO function block
• This block can acquire field data; a total of up to eight signals.
3.3 Relationship between Blocks
Fig. 3.1 Relationship between blocks
Various parameters, the node address, and the PD tag shown in Figure 3.1 must be set before using
the device. Refer to Chapter 4 for the setting procedures.
3.4 Wiring System Configuration
The number of devices that can be connected to a single bus and the cable length vary depending
on system design. When constructing systems, both the basic and overall design must be carefully
considered to achieve optimal performance.
MAO function
block
F0301.ai
AV550G
MAI function
block
System/network management VFD
Function block VFD
PD tag
Resource block
Block tag
Parameters
Communication parameters
VCR
Link master
Function block
execution schedule
Oxygen concentration sensor
DI2 function
block
DI1 function
block
AI3 function
block
AI1 function
block
Block tag
Parameters
OUT
AI2 function
block
Node address
Oxygen
concentration
signal
Sensor
input
Output
Block tag
Parameters
Transducer
block