Structure Of The Valve Driver Data; Process Data - Aventics Ethernet POWERLINK Description Du Système Et Notice D'emploi

92 AVENTICS | Bus Coupler AES/Valve Driver AV, Ethernet POWERLINK | R412018143–BAL–001–AF

Structure of the Valve Driver Data

6 Structure of the Valve Driver Data
6.1

Process data

Incorrect data assignment!
Danger caused by uncontrolled movement of the system.
Always set the unused bits and bytes to the value "0".
The valve driver board receives output data from the controller with nominal values for the position
of the valve solenoid coils. The valve driver translates this data into the voltage required to actuate
the valves. The length of the output data is four bytes. Of these, 4 bits are used with a 2x valve driver
board, 6 bits with a 3x valve driver board, and 8 bits with a 4x valve driver board. Only the least
significant byte is used for these three modules; the remaining three bytes are not used on any
of the three modules.
Fig. 4 shows how valve positions are assigned on 2x, 3x, and 4x valve driver boards:
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Fig. 4: Valve position assignment
 Valve position 1
 Valve position 2
 Valve position 3
 Valve position 4
The symbols for the valve zone components are explained in section 12.2 "Valve zone"
on page 108.
WARNING
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20 Base plate, 2x
21 Base plate, 3x
22 Valve driver board, 2x
23 Valve driver board, 3x
24 Valve driver board, 4x
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