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PostPosted: Fri Dec 15, 2017 11:58 am 

Joined: Wed Apr 02, 2014 4:32 pm
Posts: 4
Hi All,

I am currently working on a Simatic S5 upgrade to the S7-400. The currently installed configuration PLC is connected to 3 LENZE 9300 drives / inverters using interbus. In the PLC there is IBS module S5 DSC / I-T and in the inverter there is 2111 module.

Communication using Drivecom protocol with 32 bit input configuration and 32 bit output.

The configuration I use for S7-400 uses profibus (port X2 from CPU) and module 2133 in LENZE.

From what I know there are two communication channels between PLC and Lenze ie

1. Process Data channel

2. Parameter Data channel

Process Data channel using IO address level, for example for one drive using address:

QW 84 Control Word; IW 84 Status Word

QW 86 Speed ​​setpoint (N-TRIM); IW 86 feeedback actual speed

While Paramater Data channel using Data Block where PLC write and read parameter of Drive / Inverter using standard block from IBS S5 DSC / I-T.

Question:

1. At motor start there is an awkwardness, the speed setpint that PLC S7 send is received differently when using S5. For example when using S5 QW86 = -96 and at LENZE AIF-IN.W1 = -95947, but when using S7 QW = -96 and in LENZE AIF-IN.W1 = -5859 so the motor rotates very slowly.

2. Where in LENZE we can monitor Control Word sent PLC. eg PLC QW84 = 2006 (hex), where can we see it in LENZE?

That is for now, more question may come latter.

Regards

bin mulyadin


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