
2.Series 15i-A OPERATION B-62924EN/04
- 64 -
Remarks) Explanation of terms used in the above table
Bit time : Time (sec) required to send one bit of data
at a specified transfer rate. This is
equivalent to the reciprocal of a transfer
rate (bps).
Gap maintenance
period
: Period during which the list for managing
the address of the connected DP-Master is
updated. (Unit: Bit time)
Operation mode : Operation mode of a DP-Master (class1).
Offline : Mode that disables
communication with all nodes
Stop : Mode that enables
communication with the DP-
Master (class2)
Clear : Mode in which the output to the
DP-Slave is set to 0
Operate : Mode that enables DI/DO
communication with DP-Slaves
Data transfer list : List with a 16-byte area. This list is held in
the DP-Master so that each bit indicates
whether data transfer to and from each of
the nodes of station numbers 0 to 125 has
been performed (1) or not (0) (bits 6 and 7
of the 16th byte are not used).