Rockwell Automation 2711 MODBUS COMMUNICATIONS FOR PANELVIEW TERMINALS - Manual (Page 16)

Publication 2711-6.9 - March 2000
16 Modbus Communications for PanelView Terminals
Data Format Modicon controllers communicate in either ASCII or RTU (Remote
Terminal Unit) transmission mode. The PanelView only supports RTU
mode. In RTU mode, each 8-bit byte contains 2 four-bit hexadecimal
characters. The following is supported:
•
1 start bit
•
8 data bits (least significant bit first)
•
1 bit for even/odd parity, no bit for no parity
•
1 stop bit if parity used, 2 bits if no parity selected
PanelBuilder32 Tag Editor Use the Tag Editor or the Tag Form dialog (accessed from the object’s
dialog) to enter tags. There are 2 types of tags:
•
digital - for bit data types
•
register - for all other data types
Bit Tag Form Dialog
Register Tag Form Dialog
Tag Editor