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Summary of Contents for MOTECK CI74
- Page 1 Manual CI74 Controller Single Actuator Controller in Modbus-RTU Supports Modbus RTU 2025.4_V1.1 Revision Technical changes may be made to improve the product without notice！...
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Page 2: Table Of Contents
5. System Diagram 6. Hardware I/O 6.1 Power input 6.2 Actuator connector 6.3 Supplementary control I/O 6.3.1 Options of CI74 control I/O 6.3.2 Behavior of Stroke Learning Function 6.4 PC setting ports 6.5 Bus communication ports 6.6 Operation indicator 6.7 Setting switches 6.7.1 Lock/Unlock of setting function... -
Page 3: Overview
1. Overview CI74 is a controller suitable for industrial applications. It allows the customer's PLC/PC host controller to control the actuator using commands that comply with the Modbus RTU communication protocol through the RS-485 network. Each CI74 only controls one actuator, but multiple CI74s can be connected using the CAT-5 or higher network cables to form a multi-actuator control system, and the number of actuator groups can be added flexibly. -
Page 4: General
● Max. number of actuator: 1 channel ● Control platform: Modbus RTU communication protocol ● Function version: CI74-D / CI74-P / CI74-B, there are three function options in this model. (For CI74-P, the actuator's motion control can only be controlled through I/O terminals and cannot be controlled through Modbus messages;... -
Page 5: Transport And Storage
If necessary, please contact the shipper or seller to discuss the disposal. 4. Precautions before Installation Before using each CI74 for the first time, be sure to turn on the parameter setting switch according to the actuator specifications (see section 6.7),... -
Page 6: System Diagram
5. System Diagram Actuator Bus control cable Additional control I/O terminal PC/PLC CI74 Actuator Additional control I/O terminal CI74 Actuator Additional control I/O terminal CI74 Actuator Additional control I/O terminal CI74... -
Page 7: Hardware I/O
6. Hardware I/O ● Pay attention to insulation protection during installation to avoid possible risks and hazards for users to touch. ● Please confirm the actuator specification before connecting. PC setting ports (Page 10) Bus communication ports (Page 11) -
Page 8: Power Input
6.1 Power input Definition Description • Nominal 24V DC (Acceptable input voltage range 22~25V DC) ; 12V DC (Acceptable input voltage range 11~13V DC) • Recommend to use a 16AWG wire (Depending on the current) • GND • Recommend to use a 16AWG wire (Depending on the current) Note: The product comes with a short power cord that converts from a minifit plug to a 2-core flying lead. -
Page 9: Supplementary Control I/O
• CI74-D and CI74-P can directly trigger stroke learning by connecting Pin ❼ to Pin ❹ (GND) of the supplementary control terminal. • CI74-B cannot trigger stroke learning from the hardware. It can only be executed from the MOTECK CI74 PC tool or through Bus commands. -
Page 10: Behavior Of Stroke Learning Function
Not used RS485_A RS485_B ● Connect to PC Use a 1500mm long USB to RJ45 PC setting cable (Fig. 1), RJ45 is connected to the CI74 (port ❶ ), and USB is connected to the PC. ❷ To purchase separately according to your needs, please consult MOTECK sales representatives. -
Page 11: Bus Communication Ports
(1) Connect each CI74 in series with CAT-5 (or above) communication cables with RJ45 connectors. Cables are prepared by customers. (2) If the CI74 is connected in series in a non-daisy chain topology, it is recommended to connect the first RJ45 (port ) of the CI74. -
Page 12: Operation Indicator
6.6 Operation indicator LED operation indicator Operation indicator Description Green indicator stays on Actuator reaches the upper and lower endstop switches Blinks green slowly Learning Red indicator stays on Power-on Blinks red slowly Override... -
Page 13: Setting Switches
6.7 Setting Switches ● For safety and correct setting, please confirm that each actuator and all necessary control input/output terminals are connected properly before turning on the input power. ● Please confirm the actuator specification before setting. ● The factory default position of DIP switches is OFF. -
Page 14: Installation Steps / Operating Instructions
7. Installation Steps / Operating Instructions First, each CI74 must be individually connected to the PC using a PC setting cable and powered on. After checking the specifications of the actuator assigned to it, set the ID address of the individual actuator through the dedicated PC tool program provided by MOTECK. (See section 8.1) -
Page 15: Moteck Ci74 Pc Tool
(3) Click the “Connect” button to activate the selected communication port. (4) Click the “Scan Devices” button to scan out the Device ID and model of the CI74 connected to the communication port. Click the “Stop Devices” button to stop scanning, or scanning will end automatically when it reaches Device ID 127. -
Page 16: Change Device Id
(2) Enter a new ID in the “Device ID” input box (valid range 1~127). (3) Click the "Renew ID" button and a prompt window “Update device ID (Address) success fully!” will pop up, indicating that the write is successful. − × Moteck CI74 PC tool v0.4.9 Bus Devices Actuators Control COMMUNICATION PORT... -
Page 17: Configuration Of Actuator Parameters
Click the Device ID in the [Bus Device] tab, and the setting interface for the ID will be displayed in the [Actuator] tab. For example, if you select ID 7 in the [Bus Device] tab, the device ID will be displayed as 7 in the [Actuator] tab. − × Moteck CI74 PC tool v0.4.9 Actuators Bus Devices Control CONFIGURATION... -
Page 18: Learning For Actuator Stroke
8.2.1 Learning for actuator stroke (1) According to the actuator connected to the CI74, select the correct specification in the “CONFIGURATION” field of the [Actuators] tab. This includes selecting whether the position signal feed- back uses a single or dual Hall sensor ('Hall sensor' box), whether the actuator has a limit switch ('Limit switch' box), and the voltage output range representing the actuator's analog position information ('Hall Pot' box). -
Page 19: Configuration For Ci74-D & Ci74-B
(2) After changing the parameters in the field, click the “Write” button, and the prompt window “Update device config successfully!” will pop up, indicating that the write is successful, that is, the CI74 settings of the selected Device ID is updated. -
Page 20: Configuration For Ci74-P
(3) In the end of configuration process, click the “Write” button, and the prompt window “Update device config successfully!” will pop up, indicating that the write is successful, that is, the CI74 settings of the selected Device ID is updated. -
Page 21: Parameters Management Function
8.3 Parameters management function 8.3.1 Read If this CI74 has been configured before, click the “Read” button in the “CONFIGURATION” field under the [Actuators] tab to load the previous parameters for display on the application screen. And a prompt window “Get device config successfully!”... -
Page 22: Import
Only files with the same format will be recognized during import. CI74_MID-0x0000_20240705-1351.config 8.3.3 Import (1) Click the “Import” button In the “File” field. − × Moteck CI74 PC tool v0.4.9 Actuators Bus Devices Control CONFIGURATION File Device ID... - Page 23 CI74_MID-0x0000_20240705-1351.config CI74_MID-0x0000_20240705-1351.config (3) Click the “Write” button to write the parameters displayed on the screen into CI74. After completion, a prompt window “Update device config successfully!” will pop up, indicating that the writing is successful and the purpose of importing the previous parameters is completed.
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Page 24: Control Function
No Error 8.4.2 For CI74-P (1) The CI74-P control function is not available in the "Move" field of the [control] tab. However, the actuator can be moved forward or backward through the supplementary control I/O terminal, and the status of the actuator can be read by this application tool. -
Page 25: Modbus Protocol
● The total length of the trunk cable and the derivation cables ● The quality of the cabling ● The functionality of the device, especially about the poll rate. (3) Modbus parameter values supported by CI74 Parameter list Parameter value... -
Page 26: Message Formats
● Address Field The length of this field is one byte, and the valid range is 1~246, representing different CI74 device addresses. 0 is a broadcast address, and devices at all addresses will receive this message, while 247~255 are reserved for special purposes. - Page 27 (2) Function code 04 (0x04): Read Input Registers (IR) Used to read the stored data from the input register of CI74, if the controller asks for a valid input register, CI74 will respond with a normal message including the requested data.
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Page 28: Data Field
(3) Function code 06 (0x06): Write Single Holding Register This function is used to write new values to a single Holding Register of the CI74. If the controller requests a write to a valid Holding Register, CI74 will respond with a normal message after completion. The normal response is just to return the request message. -
Page 29: Parameter List Of Holding Register
Description Range Default Remark address (16 bit data) 0 is the broadcast 0x0F Device Address Device ID of CI74 1~127 address Hall counts of the current stroke In units of Hall pulse 0x1F Current Position 00~0xFFFF position of the actuator... -
Page 30: Parameter List Of Input Register
0x44 System Voltage the system voltage of 0~FFF 3.3 x 92 / 20480 the connected actuator 0x45 Version No The firmware version of CI74 0x0101~0x9999 1.01~99.99 Refer to 0x46 CI74 Type The function version of CI74 (Refer to Note E) -
Page 31: Application Example
9.3.3 Application examples The following examples are typical user scenarios and corresponding message parameters. Example 1 Request to read CI74 device address (Device ID) No. 3. What is the current motor status of the actuator connected to it? Request: Field Name... - Page 32 Example 2 Request to read CI74 device address (Device ID) No. 3. What is the current position of the actuator connected to it? Request: Field Name Description Address Recipient of this request Function Read Holding Registers Starting Address Hi...
- Page 33 Example 4 Use a broadcast to request all connected CI74s to immediately stop their actuators from moving. Request: Field Name Description Address All devices (broadcast mode) Function Write Single Holding Register Starting Address Hi Holding Register 0x0025 Starting Address Lo...
- Page 34 Example 5 Request the CI74 device address (Device ID) No. 3 to move the actuator to the position of Hall positioning pulse 250. Step 1. Set GOTO position Request: Field Name Description Address Recipient of this request Function Write Single Holding Register...
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Page 35: Exception Message
9.4 Exception message In the Modbus protocol, when the controller sends an incorrect request, the device will respond with an exception message. The fields are as follows, including a 1-byte length exception code: Address Function Error Device Address Function Code... - Page 36 Terms of Use The user is responsible for the suitability of MOTECK products, and the products listed on the MOTECK website are subject to change without notice. MOTECK reserves the right to terminate sales or delete any products displayed on the website or listed in its catalog.
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