
B-63994EN/02 SETTING 1.PROFIBUS-DP MASTER FUNCTIONS
- 13 -
Item Description
CLASS2
NAME
Master Class2 Name
Name of the Master (class2) that created the bus
parameters.
Note) This is a parameter set by a master station (class
2).
MASTER
USER DATA
Master User Data
User data area for bus parameters
This is not used by the current FANUC CNCs.
Set LENGTH of MASTER USER DATA to 0.
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 Master is
updated. (Unit: Bit time)
Operation mode : Operation mode of a PROFIBUS master
function.
Offline : Mode that disables
communication with all nodes
Stop : Mode that enables
communication with the Master
Clear : Mode in which the output to the
Slave is set to 0
Operate : Mode that enables DI/DO
communication with Slaves
Data transfer list : List with a 16-byte area. This list is held in
the 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). It can be
read by a master station of class 2.