Vacon optea, Installation Manual

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PROFINET IO vacon • 95
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8
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
®
specific signals or a combination of both.
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
®
control/status word is simpler than in the PROFIDrive and therefore
controlling the drive is also easier in the PLC application. If you have only VACON
®
devices
controlled by your PLC over PROFINET IO, then it is better to use VACON
®
control/status word.
Telegram selection also affects the motor speed control. With VACON
®
control word, the motor
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
®
speed reference/actual
(FBSpeedReference/FBSpeedActual). The main difference between these types is the integer value
5 STW1 bit 1 = False OR bit 2 = False None
6
Enable operation
STW1 bit 3 = True
0x47F
Drive function is enabled, requires that Drive
is in fieldbus control (ZSW1 status word bit 9
7
Coast stop
STW1 bit 1 = False
0x47D Stop by coast Stop by coast Stop function
8,
12
Quick stop
STW1 bit 2 = False
0x47B Quick stop Stop by ramp Stop function
9
Ramp stop
STW1 bit 0 = False
0x47E Stop by ramp Stop by ramp Stop function
10
Disable operation
STW1 bit 3 = False
0x477
Drive function is disabled, stop by stop func-
tion
11
Coast stop
STW1 bit 1 = False
0x47D Stop by coast Stop by coast Stop function
13,
15
Standstill detected OR Disable
operation
STW1 bit 3 = False
0x477
Drive function is disabled, stop by stop func-
tion
14 ON (Re-enable operation) 0x47F Drive function is re-enabled
Table 48. PROFIdrive state machine commands
# Bits of control word
Value
(hex)
Action(s)
VACON
®
100
family &
VACON
®
20X/CP
VACON
®
20 VACON
®
NXP