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
PROFIBUS DP
Services and
Supported I/O modules
Profiles
I/O data
I/O Data
Diagnostics data size
MX2 GSD file
RX GSD file
1-3 Introduction to PROFIBUS
1-3-1 The Purpose of PROFIBUS
1-3-2 What is PROFIBUS DP
!Caution
4
Set_Prm
Get_Cfg
Global-Control (SYNC/UNSYNC, FREEZE/UNFREEZE & CLEAR)
Not supported
MSAC2_Initiate
PROFIdrive V2
Conventional
Flexible
PROFIdrive V2
(If P182 = 0)
Conventional
(If P182 = 1)
Flexible
(If P182 = 2)
28 bytes max. input data using PPO Type 5
28 bytes max. output data using PPO Type 5
11 bytes
OC_0C6A.gsd
OC_0D2F.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
Chk_Cfg Slave_Diag
Rd_Inp Rd_Outp
MSAC2_Read MSAC2_Write
(If P182 = 0)
(If P182 = 1)
(If P182 = 2)
PPO Type 1 (4 words PKW + 2 words PZD)
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)
Basic Data
Extended Data 1
Extended Data 2
Flexible (10 words output and input)
Section 1-3
Data_Exchange
MSAC2_Abort