| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a node device of cyclic communication for enabling a cyclic communication system to have flexibility without making cyclic maps overlap. <P>SOLUTION: A cyclic map control part 4 of an entering node 2, when receiving only the designation of a transmission size value from a host 1, receives cyclic map information written in a system cyclic memory 7 of another node 2, searches an empty area of a user cyclic memory 5 with reference to the cyclic map information, first allocates an area of the designated transmission size value to the beginning of the empty area of the user cyclic memory 5, also writes cyclic map information of its own node to the system cyclic memory 7, and communicates the cyclic map information to the another node 2, and a cyclic map control part 4 of the another node 2 changes setting of a cyclic map of a user cyclic memory of its own node 2 with reference to the communicated cyclic map information. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
