Molex DRL-DPM-104 Network Interface Card Техническое Руководство
Protocol Specifications
All BradCommunications™ Direct-Link™ networks interface cards for Profibus-DP support following protocols:
DP-V0 Master/Scanner Class1 & 2 and Slave modes simultaneously
DP-V0 Slave passive mode only
DP-V1 Master Class 1 & 2 (for PCU card)
DP Master features
DPV0 Master/Scanner Class1 for optimized exchange of input/output data with the slaves
(Data_Exchange).
DP-V0 Master Class2 for:
(Data_Exchange).
DP-V0 Master Class2 for:
Slave
diagnostics
Reading inputs/outputs of a slave
Reading configuration data
Changing the slave address.
Access Modes
DP-V1 Master Class1 & 2:
Read Data Block Class 1
Write Data Block Class 1
Read Data Block Class 2
Write Data Block Class 2
Abort Data Block Comm Class 2
Multi-master mode
Yes (able to share the bus with other DP masters connected on the network)
Watchdog control
Yes, enables the master to switch into error if no data has been exchanged during this period
(Bus Fault)
(Bus Fault)
Input/Output Data
Memory of I/O data image:
- PC/104:
up to 2Kbytes
- PCI-Universal: up to 8Kbytes
- CompactPCI:
up to 4Kbytes
Manage up to 244 data bytes per slave
Automatic organization of I/O data in the DPRAM memory
Max. DP Slave
Connect up to 126 slaves
Data consistency
Yes (i.e. user gets the data up to 122 bytes of a slave from one and the same DP cycle)
Data format
Direct access to variable types (bit, byte, word, double word)
Local DP slave
Run simultaneously with Master modes.
Offers data exchange with another master on the network. The size of the input and output data
is user-definable, and all exchange combinations are possible (from 0 to 244 bytes). The slave
can ensure data consistency up to 122 bytes. (see DP-Slave features below for details).
Offers data exchange with another master on the network. The size of the input and output data
is user-definable, and all exchange combinations are possible (from 0 to 244 bytes). The slave
can ensure data consistency up to 122 bytes. (see DP-Slave features below for details).
DP Slave passive features
Access Mode
DP-V0 Slave passive (no management of Profibus token)
Input memory size
Configurable from 0 to 244 bytes
Output memory size
Configurable from 0 to 244 bytes
Slave address
Configurable from 0 to 126 by software configuration
GSD files
Provided on the CD-Rom
Data Format
Configurable Intel or Motorola
Address Assignment
Master
Master
(Set_Slave_Address)
Not supported
Extended Diagnostic
Not supported
Direct-Link™ Profibus-DP