Rockwell Automation 20-COMM-E PowerFlex EtherNet/IP Adapter User Manual
Page 197
Using Explicit Messaging
6-71
20-COMM-E EtherNet/IP Adapter User Manual
Publication 20COMM-UM010G-EN-P
In this message example, the parameters have the following values.
MicroLogix 1100/1400 Controller Example Ladder Logic Program to Write Multiple
Parameters Using Generic Get/Set Attribute Service
A Custom scattered write message is used to write to multiple parameters.
This write message example writes the following values to these five
parameters.
See
DPI Parameter Object on page C-16
(Class code 0x93) or
(Class code 0x9F) for parameter
numbering.
Important: See
for limitations of PowerFlex 7-Class
and PowerFlex 750-Series drives when using DPI Parameter
Object Class code 0x93 or Host DPI Parameter Object Class
code 0x9F for explicit messaging.
Figure 6.91 Example Ladder Logic to Write Multiple Parameters
Important: If the explicit message scattered write must be written
continuously, then use a separate Generic Set service explicit
message single write for each parameter using DPI Parameter
Object Class code 0x93 or Host DPI Parameter Object Class
code 0x9F and attribute A (10 decimal; see
).
Attribute A writes to RAM—not NVS (EEPROM) memory.
This example scattered write message using attribute 0 writes to
NVS. Over time, continuous writes will exceed the EEPROM
life cycle and cause the drive to malfunction.
PowerFlex 750-Series Drive Parameter
Read Value
Data Type
1 - [Output Freq]
45.0 Hz
REAL
7 - [Output Current]
0.03 Amp
REAL
137 - [Open Loop Fdbk]
3055441
DINT
21581 - [Port 5: Analog Out 0 Data]
45.0 Hz
REAL
260 - [Analog In0 Value]
9.377 Volts
REAL
PowerFlex 7-Class
Drive Parameter
Write Value
PowerFlex 750-Series
Drive Parameter
Write Value
141 - [Accel Time 2]
11.1 Sec.
536 - [Accel Time 2]
11.1 Sec.
143 - [Decel Time 2]
22.2 Sec.
538 - [Decel Time 2]
22.2 Sec.
105 - [Preset Speed 5]
33.3 Hz.
725 - [Zero Position]
33
106 - [Preset Speed 6]
44.4 Hz.
21555 - [Port 5: Analog In0 Hi]
5.5
107 - [Preset Speed 7]
55.5 Hz.
780 - [PTP Setpoint]
-75,555