Lenze MCH Series Drives Modbus Communications - Manual (Page 10)

RG-MHMOD 6
Drive Setup & Operation
4 MCH Drive Setup & Operation
4.1 Serial Address
All AC Tech drives have a Serial Address Parameter that must be programmed prior to attempting to
operate the serial interface (Programming Parameter #58 / AC Tech Register #109).
4.2 Serial Communications Parameter
All AC Tech drives have a Serial Communications Parameter that governs the operation of the Serial Link.
On MCH drives this is #57 SERIAL LINK (register #108). Table 4 lists the selections for MCH Parameter 57,
SERIAL LINK.
Table 4: MCH Parameter 57 Selections
Setting Description Watchdog Timeout Period
00 DISABLE
01 WITH TIMER 10 sec
02 WITHOUT TIMER
Explanation of Terms:
• DISABLED serial link not operational (this is the drive's default setting)
• WITH TIMER serial link allows reading & writing of both control & programming parameters.
Watchdog timer is enabled (refer to section 4.6,
Watchdog Timer ).
• WITHOUT TIMER serial link allows reading & writing of both control & programming parameters.
Watchdog timer is disabled (refer to section 4.6, Watchdog Timer ).
Prior to attempting to communicate with the drive, Serial Communications Parameter must be appropriately
programmed.
4.3 Control Parameter
The Control Parameter on MCH drives (Programming Parameter #30 / AC Tech Register #81) determines
how much control a user has over a drive via the serial link. The Control Parameter must be appropriately
programmed for a particular application. Refer to the MCH Series Installation and Operation Manual (MH01)
for a detailed explanation on programming the drive parameters.
Table 5: Control (Parameter 30)
Setting Description
00 NORMAL (default)
01 NORM NO HAND
02 SERIAL SPEED
03 S SPD / NO HAND
04 SERIAL AUTO
05 S AUTO / NO HAND