Rockwell Automation 20-COMM-Q ControlNet Adapter - Manual (Page 146)

6-18 Using Explicit Messaging
20-COMM-C/Q ControlNet Adapter User Manual
Publication 20COMM-UM003F-EN-P
Write Multiple Parameters
ControlLogix Controller Example Ladder Logic Program to Write Multiple
Parameters Using RSLogix 5000 Software, Any Version
A 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 Host DPI
Parameter Object on page C-30 (Class code 0x9F) for parameter
numbering.
Important: See Table 6.A on page 6-2 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.
Table 6.G Example Controller Tags to Write Multiple Parameters
Figure 6.19 Example Ladder Logic to Write Multiple Parameters
Important: If the explicit message scattered write must be written
continuously, then use a separate 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
page 6-11 ). 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 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
Operand Controller Tags for Write Multiple Message Data Type
XIC Execute_Scattered_Write_Message BOOL
MSG Scattered_Write_Message MESSAGE