Communications Parameters (P750 And P752); Serial Communication Parameters (P770 To P799) - Siemens SITRANS LR 300 Instruction Manual

Communications Parameters (P750 and P752)

P750 Ident Number Section (F = 0)
Directs the device to use either the manufacturer-specific (Siemens Milltronics)
identification number, or the profile-specific ident number (Class 1 master using Profile
3.00 level gsd file).
Values
P752 Profibus PA / HART address
Allocates the fieldbus ID or address for the device.
Values for Profibus PA
Values for HART

Serial Communication Parameters (P770 to P799)

These parameters control the RS-485 port. If you are using the Modbus protocol, use
P799 to set the SITRANS LR 300 to read-only or read-write. The Modbus Register Map is
on page 83.
P770 Serial Protocol
Sets the communications protocol used on the RS-485 port.
Values
Page 72
0 Manufacturer Specific identification number
1 Profile Specific Ident Number
Range: 1 to 126
Default: 126
Range: 0 to 16
Default: 0
(F = 1)
0 Communications disabled
1 Dolphin Protocol
2 Modbus ASCII slave serial protocol
3 Modbus RTU slave serial protocol
SITRANS LR 300 – INSTRUCTION MANUAL 7ML19985CL02