Chapter 3 Function List; Functions Of Dp-Master; Functions Of Dp-Slave - Mitsubishi Electric MELSEC iQ-R Series User Manual

3
FUNCTION LIST
The following table lists the functions of the RJ71PB91V. For details on the functions and constraints of the redundant system,
refer to the following.
 MELSEC iQ-R PROFIBUS-DP Module User's Manual (Application)
3.1

Functions of DP-Master

Function Description
I/O data exchange function Exchanges I/O data between the DP-Master and the DP-Slave.
Acquisition of diagnostic Using I/O signals and buffer memory, acquires diagnostic information and extended diagnostic
information and extended information occurring in DP-Slaves during I/O data exchanges.
diagnostic information
Global control function By sending the service from the DP-Master via multicast (simultaneous broadcast), simultaneously
controls DP-Slaves in the specified group to hold or clear I/O data.
Acyclic communication Reads data of DP-Slaves from DP-Master or writes data to DP-Slaves from the DP-Master at a different
function timing from the I/O data exchanges.
Alarm acquisition function Acquires alarm or status information occurring in a DP-Slave from the DP-Master.
Time control over DP-Slaves Sets the time of each DP-Slave from DP-Master by operating it as a time master.
Data swap function Swaps upper and lower bytes in units of words when I/O data is sent/received.
Data consistency function Maintains consistency of I/O data when it is read/written from/to the buffer memory.
Output status setting function Sets the handling of I/O data when a CPU stop error occurs in a CPU module to which the RJ71PB91V is
for CPU stop error mounted.
Temporarily reserved station Temporarily changes a DP-Slave to a reserved station without changing slave parameters of PROFIBUS
specification function Configuration Tool.
Operation mode changing Changes the operation mode using PROFIBUS Configuration Tool or a program.
function
FDL address setting function Changes the FDL address of DP-Slaves from the DP-Master.
Redundant system function Configures the network in the redundant system.
3.2

Functions of DP-Slave

Function Description
I/O data exchange function Exchanges I/O data between the DP-Master and the DP-Slave.
Global control function By sending the service from the DP-Master via multicast (simultaneous broadcast), simultaneously
controls DP-Slaves in the specified group to hold or clear I/O data.
Notification function of Notifies the DP-Master of extended diagnostic information occurring during I/O data exchanges.
extended diagnostic
information
I/O data read function Sends I/O data on the request from the DP-Master (Class 2).
I/O configuration information Sends I/O configuration information on the request from the DP-Master (Class 2).
read function
FDL address changing Changes FDL address of DP-Slaves from the DP-Master (Class 2) or a program.
function
Data swap function Swaps upper and lower bytes in units of words when I/O data is sent/received.
Data consistency function Maintains consistency of I/O data when it is read/written from/to the buffer memory.
Output status setting function Sets the handling of I/O data when a CPU stop error occurs in a CPU module to which the RJ71PB91V is
for CPU stop error mounted.
Operation mode changing Changes the operation mode using a program.
function
Version of
PROFIBUS-DP
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV1
PROFIBUS-DPV1
PROFIBUS-DPV2







Version of
PROFIBUS-DP
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV0
PROFIBUS-DPV0




3 FUNCTION LIST
3.1 Functions of DP-Master
3
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