Maxiflex P3 PAC User Manual
67
-© Omniflex
UMM126XR18.pdf
11.2.1 MODBUS Slave Protocol
11.2.1.1.
Default MODBUS Mode - ASCII Slave at 9600 baud
To select this mode, set switch 7 “OFF” and 8 “ON” on the serial port address
switch.
This port is then configured as a MODBUS slave port operating in MODBUS
ASCII mode at a fixed 9600 baud with 7 data bits, no parity and 2 stop bits.
Switches 1 to 5 of the serial port address switch set the Modbus
communications Slave address used to access the P3 CPU through this
serial port.
The internal software settable parameters for this function have no influence
on the operation of the serial port when switch 8 is on.
This mode allows foolproof communications to be established quickly and
easily.
11.2.2 Conet/s (Peer-to-peer) Protocol
11.2.2.1.
Default Conet/s Mode (19200 baud)
To se
lect this mode, set switch 7 to “ON” and 8 to “OFF” on the serial port
address selection switch.
This port is then configured as a Conet/s port operating at 19,200 baud (with
8 data bits, no parity and 1 stop bits.)
Switches 1 to 5 of the address switch set the node address used to access
the P3 CPU through this serial port.
The internal software settable parameters for this port have no influence on
the operation of the port when switch 7 is on, and switch 8 is off.
This mode allows foolproof Conet/s communications to be established quickly
and easily, even when the internal settings for this port are unknown.
This mode allows foolproof Conet/s communications to be established quickly
and easily, even when the internal settings for this port are unknown.
11.3 Setting the Conet/c Network Port Address Switch
The Conet/c Port selection switch is located on the left, inside the front door of the CPU
(under the Conet DB9 connector). Use this switch to configure the Node address of the CPU
on the Conet network and the desired CONET baud-rate (Normal or Slow).