Control Line Menu; Generic Ascii Data Exchange; Data Sent With The Serial Port - Rockwell Automation Allen-Bradley Compact 5000 Series User Manual

Table 6 - Control Line Menu
Modem Duplex Status
Not using a modem —
Using a modem Modems in a point-to-point link are full-duplex
Master Modem is a full-duplex while slave
modem is half-duplex.
—
All modems in the system are half-duplex.
Generic ASCII
Data Exchange
RPI Comes
Send
Data
Controller

Control Line Menu

When you are required to connect to a dial-up modem, see
the duplex setting in the serial port.
Controller
—
Master Controller
Slave Controller
—
The following illustrations show different data exchanges using the serial module.

Data Sent with the Serial Port

Data is sent out of the serial port using the following steps:
1. The controller sends out the consumed packet with an incremented TxID.
2. The serial module puts the packet into the TxBuffer.
3. The serial module takes the oldest data from the TxBuffer and sends it out
to the target.
Figure 6 - Data Sent out to the Serial Port
TxID
Consume Data
Update
TxID
Non-Update
Ignore
Data
Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
Compact 5000 I/O Serial Module Features
Your Function Choice
No Handshaking
Full-duplex
Full-duplex
Half-duplex
Half-duplex
5069-SERIAL
TxBuffer
The Latest Data
Transmit Data
TxFIFO
Transmit Data
The Oldest Data
Table 6 that explains
Continuous Carrier
—
Select the continuous carrier checkbox.
Clear the continuous carrier checkbox
(default).
Binary
Data
UART
Binary
Data
Receive
Data
Target
Chapter 3
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