Introduction To Profibus - Omron 3G3AX-MX2-PRT-E User Manual

Introduction to PROFIBUS

Table 1 Option Board Specifications (continued)
Item
Master Class 1 – Slave cyclic
services
Master Class 1 – Slave acyclic
services
Master Class 2 – Slave acyclic
services
Profiles supported
Supported I/O modules
I/O data
Diagnostics data size
GSD file
1-3 Introduction to PROFIBUS
1-3-1 The Purpose of PROFIBUS
1-3-2 What is PROFIBUS DP
!Caution
Set_Prm Chk_Cfg
Get_Cfg Rd_Inp
Global-Control (SYNC/UNSYNC, FREEZE/UNFREEZE & CLEAR)
Not supported
MSAC2_Initiate MSAC2_Read
PROFIdrive V2 (If P182 = 0)
Conventional (If P182 = 1)
Flexible (If P182 = 2)
PROFIdrive V2 PPO Type 1 (4 words PKW + 2 words PZD)
(If P182 = 0)
PPO Type 2 (4 words PKW + 6 words PZD)
PPO Type 3 (2 words PZD)
PPO Type 4 (6 words PZD)
PPO Type 5 (4 words PKW + 10 words PZD)
Conventional Basic Data
(If P182 = 1)
Extended Data 1
Extended Data 2
Flexible Flexible (10 words output and input)
(If P182 = 2)
28 bytes max. input data using PPO Type 5
28 bytes max. output data using PPO Type 5
11 bytes
0C_0C6A.gsd
PROFIBUS (PROcess FIeldBUS) is an open fieldbus standard for a wide
range of applications in manufacturing, processing and building automation.
The Standard, IEC 61158 (Industrial communication networks), to which
PROFIBUS adheres, guarantees vendor independence and transparency of
operation. It enables devices of various manufacturers to intercommunicate
without having to make any special interface adaptations.
PROFIBUS DP (for Decentralized Periphery) is a variant optimized for high
speed and low-cost interfacing. It is specially designed for communication
between automation control systems and distributed I/O at the device level.
PROFIBUS DP uses the same transmission technology and uniform bus
access protocol as PROFIBUS FMS (for Fieldbus Message Specification).
Consequently, both versions can be operated simultaneously on the same
bus. DP field devices, however, cannot be controlled by FMS masters and
vice versa.
It is not possible to exchange a PROFIBUS DP device or master for a PROFI-
BUS FMS device or master. This will cause faulty operation.
Specification
Slave_Diag
Rd_Outp
MSAC2_Write
Section 1-3
Data_Exchange
MSAC2_Abort
3