Example - PENN Controls - VFD68Bxx - VFD68Cxx - VFD68Dxx - Three‐Phase Motor Speed Controller - VFD68 Three‐Phase Variable Frequency Drive

VFD68 Variable Frequency Drives Technical Bulletin

Brand
PENN Controls
Product name
VFD68 Three‐Phase Variable Frequency Drive
Document type
Technical Bulletin
Part number
24-7664-3051
Document revision
C
Revision date
2019-08-09
Language
English

The following tables contain a query message directed to the VFD68 subordinate address 5 (H05) instructing a 2 byte preset data write a value of 60HZ (H1770) to the running frequency RAM register address (system environment variable) of 40014, followed by the VFD68 response message (Table 1, Table 2).

Table 1. Query Message
Subordinate Address Function Register Address Preset Data CRC Check
H05 (8 bit) H06

(8 bit)

H00

(8 bit)

H0D

(8 bit)

H17

(8 bit)

H70

(8 bit)

H17

(8 bit)

H99

(8 bit)

Table 2. Normal Response (Response Message)1
Subordinate Address Function Register Address Preset Data CRC Check
H05 (8 bit) H06

(8 bit)

H00

(8 bit)

H0D

(8 bit)

H17

(8 bit)

H70

(8 bit)

H17

(8 bit)

H99

(8 bit)

Note: For broadcast communication, no response is returned in reply to a query; therefore, the next query must be made when the VFD processing time has elapsed after the previous query.
1 Subordinate address, function, register address, preset data, and CRC check of the normal response are identical to those of the query message. No response is made for broadcast communication.