Minarik AC200 SERIES Installation And Operation Instructions Manual Download Page 1

Minarik

Variable Speed AC Motor Drives

Modbus Control of Minarik

AC200 Series Drives

INSTALLATION AND OPERATION INSTRUCTIONS

Document Number: 250-0307

Scope

This document is intended to define the specifics required for serial communication with Minarik Corporation Standard AC200
Series drives for control, status monitoring, and programming parameters.  A familiarity with normal drive capabilities and
operations is assumed.  If this is not the case, please refer to the appropriate Minarik Installation and Operation manual as necessary.

Modbus

Details

A)  Minarik Drives running the Modbus communication protocol use the RTU (Remote Terminal Unit) transmission mode and are

slaves only.  Therefore, the device communicating with the drives must be a Modbus Master.  The baud rate is 9600, no parity
(two stop bits).  There are provisions for Odd parity 1 stop bit and Even parity 1 stop bit as well.  The bit sequence is:

B)  At this time the Minarik drives do not support the broadcast function of the protocol.

Minarik

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901 E. Thompson Ave. 

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Glendale, CA 91201 

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Ph: (800)646-2745 

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Fax: (800) 394-6334 

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www.minarikcorp.com

C)   The function codes supported by Minarik drives are:

1.  03 - Read Holding Register (4X references).  In general only one register is read at a time.  However there are a few

limited exceptions.

Exception One:

a)  Register #24  (Modbus Register #25), Drive Status, can also be read as a group of 6 words.

Exception Two:

Minarik uses a method of reading a group of related registers that may not be consecutive within the drive memory
map.  When this is done for the registers below, the response from the drive will be for the number of words
requested but will not be with consecutive registers.
b)  Register #100 (Modbus Register #101), Fault history, should be read as a group of 4 words.
c)  Register #101 (Modbus Register #102), Software version, should be read as a group of 4 words.

2.  04 - Read Input Register (3X references).  As with function 03, read one register at a time except where noted.
3.  06 - Preset Single Register (4X references).  Write single register.
4.  16 - Preset Multiple Register (4X references).  Although the function is for multiple registers, will accept only a single

register to be written.

5.  Note:  Do not differentiate between 4X and 3X references, function codes 03 and 04 are treated identically.

Warning

Modbus 3X and 4X Registers are numbered starting at 1.  However, when transmitted to a slave over the serial link, the actual
address transmitted is one less.  This is because the addresses are numbered starting from 0.  Minarik register numbers are also
numbered starting from 0.  Therefore, Minarik register numbers always correspond exactly with the address transmitted.  As a
result, MODBUS REGISTER NUMBERS ARE ALWAYS ONE GREATER THAN MINARIK REGISTER NUMBERS.
WHENEVER THE WORDS “REGISTER #xx” APPEAR, IT SHOULD BE ASSUMED THAT THEY MEAN “MINARIK
REGISTER xx”  and the Modbus Register number will be one larger.  In some instances we may show both for clarity.  For
example:  “Register #24 (Modbus Register #25) . . .”

Start  bit

1

2

3

4

5

6

7

8

Stop  bit

Stop  bit

Data

Summary of Contents for AC200 SERIES

Page 1: ...k uses a method of reading a group of related registers that may not be consecutive within the drive memory map When this is done for the registers below the response from the drive will be for the nu...

Page 2: ...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...

Page 3: ...k Register 93 B Serial Communications Parameter 1 All Minarik drives have a Serial Communications Parameter that governs the operation of the Serial Link On AC200 drives this is 15 SERIAL LINK registe...

Page 4: ...command the drive to stop The Watchdog Timer does not operate unless Controls have been UNLOCKED via Register 48 or parameters writing have been unlocked via Register 49 In case of unlocking parameter...

Page 5: ...Speed Command register This is done by sending 0200 hex to Register 1 bit 9 asserted 4 Control Drive Operation via various commands to Register 1 Start Stop Reverse direction etc 5 Control Drive Speed...

Page 6: ...k Commands Unlock Parameters Register Version W RS R RS R RS R RS R RS R RS R RS R RS R RS R RS R RS R RS R RS W RS W RS W RS R RS SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA...

Page 7: ...ote 4 On AC200 series drives this register always reads zero Note 5 Register 22 Drive hardware configuration Bits represent specific hardware configuration AC200 Series Drive All other bits 4 15 are u...

Page 8: ...ad byte D3H or Register 26 DH In percent of full load Example 64 one byte in hex 100 in decimal 100 drive load Note 6d Actual Rotational Direction Register 24 byte D4H or Register 27 DH Control Mode R...

Page 9: ...394 6334 R www minarikcorp com 0 KEYPAD 1 0 10 VDC 2 4 20 MA 3 PRESET 1 4 PRESET 2 5 PRESET 3 6 PRESET 4 7 PRESET 5 8 PRESET 6 9 PRESET 7 10 JOG 11 MOP 0 AUTO 1 MANUAL 0 NO FAULT 1 OUTPUT TRANSISTOR...

Page 10: ...ing when the proper Programming Password is entered Whenever a parameter writing session where 49 was activated is to be ended register 1 bit 1 Lock Security must be asserted This disables the watchdo...

Page 11: ...Source Keypad 01 Preset 1 02 Keypad 01 0 10 VDC 03 4 20 mA 04 56 38 H 6 TB 14 OC Output None 02 Run 02 Fault 03 None 01 Inverse Fault 04 Fault Lockout 05 At Set Speed 06 Above Preset 3 07 Current Lim...

Page 12: ...f Units 01 Whole Units 02 Whole Units 02 67 43H 17 Rotation Forward Only 01 Forward Only Forward and Reverse 02 01 18 Not Used 69 45H 19 Acceleration Time 1 3600 0 1 sec 3600 0 sec 200 20 0 sec 70 46H...

Page 13: ...s 01 OEM Settings 02 Reset 50 04 Reset OEM 03 Reset 60 04 Reset 50 05 99 63H 49 Not Used 100 64H 50 FAULT HISTORY Must Read 4 Words Read Only See Note 1 101 65H 51 SOFTWARE VERSION Must Read 1 or 4 Wo...

Page 14: ...sion The ASCII string may look like this SCF6403 In case of reading one register received high byte contains software version and low byte revision number If received word contains hexadecimal number...

Page 15: ...OPEN COLLECTOR 0 10 OPEN COLLECTOR 1 11 CHARGE RELAY 12 13 14 15 Minarik R 901 E Thompson Ave R Glendale CA 91201 R Ph 800 646 2745 R Fax 800 394 6334 R www minarikcorp com Data Low Byte Data High Byt...

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