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model 3000 DeviceNet Module Manual (DN311/DN311A)
Chapter 4 Operating Procedures for the DN311 (Software)
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4.4 User Function Block for Slave Data Input/Output
MREAD and MWRITE instructions are used for the S controller to access the input/
output data areas of the DN311, which store data to output to slave devices and input
data received from them. A sample of user function block for slave data input/output is
described in this section.
The user function block described here is a sample, and can be customized to make it
easier for the user. The internal descriptions of the user function block are given in
Appendix D. For the procedures for preparing and registe
ring user function blocks, see the Engineering Tool - Basics (6F8C0875) or the
Engineering Tool Online Manual.
The user function blocks explained in this section are scheduled to be registered in the
Engineering Tool Version 1.5 up.