LN30xx Siemens PLC Integration Basic profibus profile for

LN30xx Siemens PLC Integration

Basic profibus profile for LN30xx

Instruction and Parameter Set

Profile word layout as seen on plc

PIW word 256-301 with PQW 256-263 PLC example map for slave address 10 LN30xx Fault Gauge

profile

Checking and setting the Fault Threshholds (Lump)

Reading the Lump Threshold value which is parameter 6

PQW256 16#1006 returns

PIW256 16#3006

PIW258 16#3951 = MSW

PIW260 16#B717 = LSW

Converted = 0.000199999m = 200 microns

To set the threshold to say 165 microns.

165micron = 0. 000165m. Converted to HEX = 392D03DA

Use command

PQW256 16#3006

PQW258 16#392D = MSW

PQW260 16#03DA = LSW

PLC confirms back with

PIW256 16#3006

PIW258 16#392D

PIW260 16#03DA

Checking the fault height, length and position

Lump height

PIW274 16#3B03 = MSW

PIW276 16#126F = LSW

0.0020m = 2.0mm

Lump length

PIW278 16#3D63 = MSW

PIW280 16#BABA = LSW

0.05559m = 55.6mm

Lump position

PIW282 16#43C4 = MSW

PIW284 16#F999 = LSW

393.9499m

Note that this was with a line running in simulated speed of 30m/min.

Verify Gauge is reading for communication

PIW262 16#2300

2 3 0 0

0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0

So bits 13, 9 and 8 active = FD, RN and PO bits all active

Serial Code definitions to be read in conjunction with Profibus profile

End of Document