Enda Edp2041 Digital Potentiometer User Guide

EDP2041 Digital Potentiometer
User Guide

Read this document carefully before using this device. The guarantee will be expired by damages if you don’t attend to the directions in the user manual. Also, we don’t accept any compensation for personal injury, material damage, or capital disadvantages.

Thank you for choosing ENDA EDP2041 potentiometer.

• 35x77mm sized.
• 4 digits display.
• Easy to use by front panel keypad.
• Communication via RS-485 Modbus protocol or synchronous running between two or more potentiometers (Optional).
• Preset value can be adjusted from external buttons.
• The display scale can be adjusted between -1999 and 9999.
• The decimal point can be adjusted between 1. and 3. digits.
• 0-10V,0-20 mA a, and 4-20mA output with adjustable minimum and maximum values.
• ‘Soft on and ‘soft off’ properties can be selected.
• Parameter access protection on 3 levels.
• CE marked according to European Norms.

Order Code: EDP2041 –

1. Supply Voltage UV….90-250V AC LV……10-30V DC /8-24V AC
2. Modbus
   RS… Modbus (Specify at Order)

TECHNICAL SPECIFICATIONS

KEEP AWAY the device from exposure to corrosive, volatile, and flammable gases or liquids, and DO NOT USE the device in similar hazardous locations.

Avoid any liquid contact while the device is switched on.
DO NOT clean the device with solvent (thinner, gasoline, acid, etc.) and/or abrasive cleaning agents.

TERMS

DIMENSIONS

Depth

To remove the device from the panel :

• While pushing the flush-mounting clamp in that direction 1, pull out in the direction 2.

Note :

1. Panel thickness should be
2. There must be at least 60mm free space behind the device, otherwise, it would be difficult to remove it from the panel.

CONNECTION DIAGRAM

ENDA EDP2041 is intended for installation in control panels. Make sure that the device is used only for the intended purpose. The electrical connections must be carried out by qualified staff and must be according to the relevant locally applicable regulations. During an installation, all of the cables that are connected to the device must be free of electrical power. The device must be protected against inadmissible humidity, vibrations, and severe soiling. Make sure that the operating temperature is not exceeded. The cables should not be close to the power cables or components.

Note :

1. Mains supply cords shall meet the requirements of IEC 60227 or IEC 60245.
2. In accordance with the safety regulations, the power supply switch shall bring the identification of the relevant instrument and it should be easily accessible by the operator.

SYNCHRONIZED OPERATING CONNECTION

NOTE :

• the parameter should be selected C.Pot in the master potentiometer. In this case parameters of other potentiometers aren’t used. But be sure that isn’t selected in slave potentiometers to prevent confusion. Settings of slave potentiometers change proportional to the setting of the master potentiometer. For example; When Max. output of the master potentiometer is changed from 10V to 5V, max. the output of slave potentiometers decreases by half of the previous value proportional to this.  If the previous output of the slave potentiometer is 6V, it decreases by 3V. P.on.c parameter of slave potentiometer should be selected oFF in order to understand the master potentiometer when a slave is energized.
• The computer should be used to change only a few potentiometers. In this case, there is no master potentiometer. The output of the required potentiometer is changed
  according to. parameter.

Running Mode

ENDA EDP2041 DIGITAL POTENTIOMETER MODBUS PROTOCOL ADDRESS MAP

Memory map for Holding Registers

Parameter Number	Holding Register addresses Decimal (Hex)	Data Type	Data Content	Parameter Name	Read/Write Permission	Default Parameters
HO	0000d (0000h)	Word	Percentage of the external control.Adjustable between %0.00 and %100.0		Readable / Writable	10000
H1	0001d (0001h)	Word	Preset value		Readable / Writable	1000
H2	0002d (0002h)	Word	Decimal point		Readable / Writable	0
H3	0003d (0003h)	Word	The lower value of the scale		Readable / Writable	0
H4	0004d (0004h)	Word	The upper value of the scale		Readable / Writable	9999
H5	0005d (0005h)	Word	The lower limit of the preset value		Readable / Writable	0
H6	0006d (0006h)	Word	The upper limit of the preset value		Readable / Writable	2000
H7	0007d (0007h)	Word	Device address for Rs485 network connection (Adjustable between 1-247.) If set to “0”,the control potentiometer mode is entered.		Readable / Writable	1
H8	0008d( 0008h)	Word	Baud rate selection ( 0= None;1=2400bps ; 2=4800bps ; 3=9600bps ; 4=19200bps; 5=38400bps)		Readable / Writable	3
H9	0009d (0009h)	Word	-(1)heofgr,oipenoinng,tr control parameter		Readable / Writable	0
H10	0010d (000Ah)	Word	Output upper arrow button to fetch the value of the preset selection		Readable / Writable	0
H11	0011d (000Bh)	Word	Output lower arrow button to fetch the value of the lower limit selection		Readable / Writable	0
H12	0012d (000Ch)	Word	Time to increase the output voltage		Readable / Writable	30
H13	0013d (000Dh)	Word	Time to decrease the output voltage		Readable / Writable	30
H14	0014d (000Eh)	Word	Preset the value of the increment and decrement rate or cancel the setting 0 = cancel,		Readable / Writable	1
H15	0015d (000Fh)	Word	Output type selection parameter 0 = 0-10y output, 1 = 4-20mA output ,2 = 0-20mA output		Readable / Writable
H16	0016d (0010h)	Word	User security parameter configuration menu (0 = Menu invisible, 1= Menu programmable, 2 or 3 = Menu only traceable).		Readable / Writable	1
H17	0017d (0011h)	Word	Output security parameter configuration menu (0 = Menu invisible, 1= Menu programmable, 2 or 3 = Menu only traceable).		Readable / Writable	1
H18	0018d (0012h)	Word	Function control parameter (23040d (5A00h) value is entered,any function executed. (23041d (5A01h) value is entered,the default values will be restored.		Readable / Writable	0
H19	0019d (0010h)	Word	Returning method of the output to preset value with the external “Up” input.		Readable / Writable	0
H2O	0020d (0011h)	Word	Returning method of the output to preset value with the external “Down” input.		Readable / Writable	0

The memory map for Coils

Parameter Number	Input Register addresses Decimal (Hex)	Data Type	Data Content	Parameter Name	Read/Write Permission	Default Parameters
10	0000d (0000h)	Word	Instant set value		Only readable
11	0001d (0001h)	Word	% of the value the analog output (%0.00-°/0100.00 sensitivity)		Only readable

The memory map for Discrete Input

Parameter Number	Discrete input addresses	Data Type	Data Content	Parameter Name	Read/Write Permission Default	Parameters
DO	(0000)h	Bit	State of the external down button (0 = OFF .1 = ON)		Only readable
D1	(0001)h	Bit	State of the external up button (0 = OFF .1 = ON)		Only readable

MODBUS ERROR MESSAGES
Modbus protocol has two types of errors, communication errors, and operating errors. The reason of the communication error is data corruption in transmission. Parity and CRC control should be done to prevent communication errors. The receiver side checks the parity and CRC of the data. If they are wrong, the message will be ignored. If the format of the data is true but the function doesn’t perform for any reason, an operating error occurs. Slave realizes the error and sends an error message. The most significant bit of function is changed to ‘1’ to indicate an error in the error message by the slave. Error code is sent in the data section. Master realizes error type via this message.

Modbus Error Codes

Message example;
Structure of command message (Byte Format)

Structure of response message (Byte Format)

As you see in the command message, coil information of (4A1)h = 1185 is required but there isn’t any coil with an 1185 address.
Therefore error code with the number (02) (Illegal Data Address) sends.

SİSEL MÜHENDİSLİK ELEKTRONİK SAN. VE TİC. A.Ş.
Şerifali Mah.
Y.Dudullu 34775
Barbaros Cad. No:18
ÜMRANİYE/İSTANBUL-TURKEY
Tel : +90 216 499 46 64 Pbx. Fax : +90 216 365 74 01
url : www.enda.com.tr

References

• o.C.SC
• U.C.SC
• Anasayfa - ENDA Endustriyel Kontrol ve Otomasyon