Profinet Io Process Communication; Choosing Telegram Type - Vacon optea Installation Manual

PROFINET IO
# Bits of control word
5 STW1 bit 1 = False OR bit 2 = False
Enable operation
6
STW1 bit 3 = True
Coast stop
7
STW1 bit 1 = False
8, Quick stop
12 STW1 bit 2 = False
Ramp stop
9
STW1 bit 0 = False
Disable operation
10
STW1 bit 3 = False
Coast stop
11
STW1 bit 1 = False
Standstill detected OR Disable
13,
operation
15
STW1 bit 3 = False
14 ON (Re-enable operation)
8.3

PROFINET IO process communication

The PROFIdrive profile specifies telegrams used for process communication. The option boards
support four types of different telegrams with and without extra process data items. These
telegrams contain either PROFIdrive or VACON
It is also possible to use up to eight (8) Process Data fields, or sixteen (16) when using extended or
fast communication mode. If the normal communication mode is used, the upper 8 Process Data
items (9-16) are either zeroes (actual data) or not used (setpoint data). See Chapter 6.2 "Internal
communication modes" for more details. The following chapters describe the different types of
telegrams and the signals that form them.
8.3.1

Choosing telegram type

When choosing a telegram for PROFINET IO communication, you need to take a few things into
account, for example, if you need PROFIDrive control/status word (STW1/ZSW1) or if you could use
®
VACON control/status word.
We recommend you to use STW1 when you have devices from multiple manufactures which all can
be controlled with PROFIDrive control word. This then makes writing the PLC application easier,
especially if you have PROFIDrive block ready for your PLC.
State machine for VACON
controlling the drive is also easier in the PLC application. If you have only VACON
controlled by your PLC over PROFINET IO, then it is better to use VACON
Telegram selection also affects the motor speed control. With VACON
direction can be controlled with a single bit. PROFIDrive motor direction is controlled with negative/
positive values. Telegrams with PROFIDrive control/status word generally have also PROFIDrive
speed reference/actual (NIST_A/NSOLL_A). Other telegrams have VACON
(FBSpeedReference/FBSpeedActual). The main difference between these types is the integer value
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
Table 48. PROFIdrive state machine commands
Value
(hex)
0x47F
0x47D
0x47B
0x47E
0x477
0x47D
0x477
0x47F
®
®
control/status word is simpler than in the PROFIDrive and therefore
Action(s)
®
VACON 100
family & VACON
®
VACON 20X/CP
None
Drive function is enabled, requires that Drive
is in fieldbus control (ZSW1 status word bit 9
Stop by coast Stop by coast Stop function
Quick stop Stop by ramp Stop function
Stop by ramp Stop by ramp Stop function
Drive function is disabled, stop by stop func-
tion
Stop by coast Stop by coast Stop function
Drive function is disabled, stop by stop func-
tion
Drive function is re-enabled
specific signals or a combination of both.
®
®
control word, the motor
vacon • 95
® ®
20 VACON NXP
®
devices
control/status word.
®
speed reference/actual
8