Rockwell-automation 20-COMM-E PowerFlex EtherNet/IP Adapter Uživatelský manuál stáhnout pdf (Strana 159)

Using Explicit Messaging 6-33

20-COMM-E EtherNet/IP Adapter User Manual

Publication 20COMM-UM010G-EN-P

SLC 500 Controller Example Ladder Logic Program to Write a Single Parameter

Using Read/Write Parameter Service

A Write Parameter message is used to write to a single parameter. This

write message example writes a value to parameter 140 - [Accel Time 1] in

a PowerFlex 7-Class drive.

Important:Parameter Object Class code 0x0F is not supported in

PowerFlex 750-Series drives. To do a single parameter write,

follow the SLC 500 (Generic Attribute Service) single write

example on page 6-39

Figure 6.38 Example Ladder Logic to Write a Single Parameter

Important:If the explicit message single write must be written

continuously, use DPI Parameter Object Class code 0x93 and

attribute A (10 decimal; see page 6-40

). This writes to RAM—

not NVS (EEPROM) memory. This example single write

message using Class code F writes to NVS. Over time,

continuous writes will exceed the EEPROM life cycle and

cause the drive to malfunction.

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Rockwell-automation 20-COMM-E PowerFlex EtherNet/IP Adapter Uživatelský manuál Strana 159