2
D) Exception codes:
01 - Command rejected, Illegal function.
02 - No such register.
03 - Data out of range.
04 - Wrong data format.
05 - Slave device busy. In Keypad Programming mode, cannot write registers.
E) The Minarik drive will most nearly conform to the Modicon
Micro 84 in capabilities. This may be of importance when
configuring networks for DDE Servers.
F) Modbus and Modicon are registered trademarks of Schneider Electric. For more information about the Modbus Protocol please
refer to the Modicon Modbus Protocol Reference Guide. The 24 hour support telephone number for Schneider Electric is 1-800-
468-5342.
Universal Registers
Currently the AC400 Series, AC300 Series and AC200 Series of Minarik Drives support Modbus-based communications. Since the
three families of drives have quite different parameters and size ranges, the parameter (register) definitions are in many cases quite
different. In order to facilitate communication in a network with a mix of drive types, certain Minarik Register locations have been
made universal among Minarik drives. While their locations are consistent, their contents may vary as defined in the following
table:
Data Internal and External Representation
A) All registers are 16 bits. The data within these registers can take on the following forms:
1) Individual bit commands (16 per register).
Example: Register #1 (Modbus Register #2).
2) Individual bit flags (16 per register).
Example: Register #22.
3) A concatenation of two 8 bit unsigned integers.
4) A 16 bit unsigned integer. This unsigned integer could in turn represent many different types of data with various
scaling rules and units, which are defined by the DATA TYPE of the register.
B) Data Types
Data passed in registers across the Modbus communications link are always in INTERNAL units. The drive itself may show the
information in alternate DISPLAYED units. For example: drive speeds are always stored internally as tenths of a Hz but the drive
may display that speed in whole Hz by dropping the tenth using programmed conversion factors. The following are examples of the
internal units used on the AC200 series:
Minarik R 901 E. Thompson Ave. R Glendale, CA 91201 R Ph: (800)646-2745 R Fax: (800) 394-6334 R www.minarikcorp.com
Type Unit Example
SPEED .1 Hz 60 Hz = 600
TIME .1 Sec 30.0 Sec = 300
See Programming Parameter List
Minarik Reg # Function
1 Drive Control (WRITE ONLY) Not all drives will have control functions. But when the function
is available it will be at a defined bit location within Register #1
19 Drive Family (READ ONLY) This register is CONSISTENT AMONG ALL MINARIK DRIVES:
- 65 -- AC300 & AC400 Series
- 66 -- AC200 Series
21 Drive Size (READ ONLY) Code to identify Power (HP/KW) and Line Voltage of the drive.
Family dependent. For the AC200 Series it always reads zero.
24 Drive Size (READ ONLY) Various operational variables.
48 Unlock Control (WRITE ONLY)
49 Unlock Writing of registers (WRITE ONLY)
50 Parameter Configuration Number (READ ONLY)
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