7 Packet Structures
7.1 Important Information
N O T I C E
The following functions are only available with VLT® Soft Starter MCD 500: Parameter management, dual motor control, digital
inputs, jog, current measurement in amperes, power information, warnings.
VLT® Compact Starter MCD 201 open-loop soft starters do not support motor current and motor temperature information.
7.2 Control Commands (Controller to Device)
Use output bytes 0–1 to send a control command to the soft starter.
N O T I C E
Bit 4 of byte 0 must be set to 0 before the soft starter can perform a start.
Table 3: Control Command Bits
Byte
Bits
Details
0
0–1
Reserved.
2–3
0 = Use soft starter remote input to select motor set.
1 = Use primary motor set when starting.
2 = Use secondary motor set when starting.
3 = Reserved.
4
0 = Stop action as selected in the soft starter.
1 = Stop action will be a coast to stop.
5–7
Reserved.
1
0
0 = Stop.
1 = Start.
1–2
Reserved.
3
1 = Reset.
4–7
Reserved.
2–5
Parameter management.
7.3 Status Information (Device to Controller)
Soft starter status information is always available when the device is active.
N O T I C E
For models MCD5-0053B and smaller, current reported via communications is 10 times greater than the actual value (shown on
the LCP).
7.3.1 Bytes 0–1: Control Status
Bits
Details
0–5
Current (% of motor FLC).
6
Local/Remote.
AN428735951761en-000101 / 175R1188
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Packet Structures
PROFINET Module
Installation Guide