CM 1243-5
Operating Instructions, 04/2011, C79000-G8976-C246-01
43
Glossary
Bus parameter
Special parameters that control transfer characteristics on the bus. Each PROFIBUS node
must use bus parameters that match the bus parameters of other nodes.
CLEAR mode
Mode of the DP master; inputs are read cyclically, outputs remain set to 0.
CM
Communications module
Module for communications tasks that is used in an automation system as an interface
expansion of the CPU. Same interface types of a CPU and a CM are functionally identical.
Contol job
Control command for DP mode.
Examples:
CLEAR, SYNC, FREEZE, UNFREEZE, ACT, DEACT.
CP
Communications processor
Module for expanded communications tasks that provides the CPU with additional interface
types or communications options.
DP I/O module
Component of a DP slave. DP slaves have a modular structure. A DP slave has at least one
DP I/O module.
DP master
A node with master functionality on PROFIBUS DP. The following must be distinguished:
DP master (class 1) or DP master 1
The DP master 1 handles user data traffic with the DP slaves assigned to it.
To Next Page
Loading...
