Communications D - 26
Mailbox Function Points
Reading a Drive Parameter
Two points are defined for reading any Drive parameter:
#70
Specifies the parameter to be read from
#71
Reports the value of the parameter specified in Point #70
When this point is read, it retrieves data from the parameter and sends it to the controller
Example:
Entering a value of 387 (183 hex) in Point #70 specifies Drive parameter B1-04. Reading Point #71 returns the cur-
rent setting of parameter B1-04 to the controller
Writing to a Drive Parameter
Two points are defined for writing to any Drive parameter:
#72
Specifies the parameter to be written to
#73
Entry location of the value to be written to the parameter specified in Point #72
When this point is written to, it will write the value to the Drive. An enter or accept command does not need to be
sent for the data to be taken by the Drive. The behavior of the write is the same as with the digital operator. If the
Drive is running, there are a limited number of Drive parameters that can be written to.
Example:
Entering a value of 387 (183 hex) in Point #72 specifies Drive parameter B1-04. Commanding Point #73 to a value
of 1 enables the Drive for reverse run.
Refer to the either the E7 User's Manual or the E7 MODBUS
®
Technical Manual for MODBUS
®
communication set-up and
configuration. The E7 User's Manual and the E7 MODBUS
®
Technical Manual provide a reference to E7 Drive parameters
and their respective Drive addresses.
Summary of Contents for E7LBA002
Page 1: ...E7L Drive Bypass Technical Manual Model E7L Document Number TM E7L 01 ...
Page 8: ...Introduction vi Notes ...
Page 12: ...Table of Contents x Notes ...
Page 54: ...Electrical Installation 2 22 Wiring Diagram ...
Page 55: ...Electrical Installation 2 23 ...
Page 87: ...Start Up and Operation 4 9 Notes ...
Page 202: ...Diagnostic Troubleshooting 6 30 Notes ...
Page 248: ...Capacity Related Parameters B 6 Notes ...
Page 279: ...Communications D 27 Note ...
Page 280: ...Communications D 28 ...
Page 292: ...Spare Parts F 6 ...
Page 304: ...Index 12 ...
Page 305: ......