Rockwell Automation 1768-L45S Compact GuardLogix Controllers - Manual (Page 53)

Rockwell Automation Publication 1768-UM002C-EN-P - April 2012 53
Communicate over Networks Chapter 4
Additional Resources
Table 11 - DF1 Modes for Logix5000 Controllers
Mode Functions
DF1
Point-to-Point Communication between a controller and one other DF1-protocol-compatible device.
This is the Default System mode. These are the default parameters:
• Communication Rate: 19,200 bps
• Data Bits: 8
• Parity: None
• Stop Bits: 1
• Control Line: No Handshake
• RTS send Delay: 0
• RTS Off Delay: 0
This mode is typically used to program a controller through its serial port.
DF1 Master • Control of polling and message transmission between the master and slave nodes.
• The master/slave network includes one controller configured as the master node and up to 254
slave nodes. Link slave nodes using modems or line drivers.
• A master/slave network can have node numbers from 0...254. Each node must have a unique
node address. Also, for your link to be a network, it must consist of one master and one slave
station.
DF1 Slave • A controller to operate as a slave station in a master/slave serial communication network.
• When there are multiple slave stations on the network, link slave stations by using modems or
line drivers to the master. When you have a single slave station on the network, you do not
need a modem to connect the slave station to the master. You can configure the control
parameters for no handshaking. You can connect 2...255 nodes to a single link. In DF1 Slave
mode, a controller uses DF1 half-duplex protocol.
• One node is designated as the master and controls who has access to the link. All of the other
nodes are slave stations and must wait for permission from the master before transmitting.
DF1 Radio
Modem • Compatible with SLC 500 and MicroLogix 1500 controllers.
• This mode supports Master and Slave, and Store and Forward modes.
User • Communication with ASCII devices.
• This requires your program to use ASCII instructions to read and write data from and to an ASCII
device.
DH-485 • Communication with other DH-485 devices.
• This multi-master, token-passing network permits programming and peer-to-peer messaging.
Resource Description
EtherNet/IP Modules in Logix5000 Control Systems User
Manual, publication
ENET-UM001
Contains detailed information on configuring and using
EtherNet/IP communication modules in a Logix5000
control system
ControlNet Modules in Logix5000 Control Systems User
Manual, publication
CNET-UM001
Contains detailed information on configuring and using
ControlNet communication modules in a Logix5000
control system
DeviceNet Modules in Logix5000 Control Systems User
Manual, publication
DNET-UM004
Contains detailed information on configuring and using
the 1756-DNB in a Logix5000 control system