Updating
iPhone Screenshots
iPad Screenshots
Description
MODTest Pro is a fast and simple utility for testing MODBUS devices over WiFi or Bluetooth. It supports a wide range of MODBUS functionality, including the ability to operate as a client or server (master or slave). It supports both TCP and UDP connections when using WiFi and it supports serial communication via HM-10 BLE modules.
Tap the Setup button for the communication setup page to enter the appropriate parameters for your device. Return to the main display to send your poll and view the data (when in client mode) or accept and respond to data requests from a master device (when in server mode).
The Comm Setup view allows a number of addressing, timing, and communication mode parameters to be configured. Besides a comprehensive user guide, the app also has extensive built-in help. Tap on any yellow label or info button for a description of that parameter.
The app supports MODBUS-TCP, MODBUS-RTU, and MODBUS-ASCII protocols, and they can all be transmitted via TCP, UDP, or Bluetooth. It also supports the GSI protocol which was developed in 1985 and was the first tank gauging protocol to use standard RS232 and RS485 serial data communication media. The app also features a User Data Mode that allows you to enter a complete poll string independent of any particular protocol. This allows transmission of special ASCII data polls or any MODBUS command that is not natively supported by the app.
The following MODBUS function codes are supported:
1 – Read Coils
2 – Read Discrete Inputs
3 – Read Holding Registers
4 – Read Input Registers
5 – Write Single Coil
6 – Write Single Register
7 – Read Exception Status
15 – Write Multiple Coils
16 – Write Multiple Registers
17 – Report Server ID
Addresses must be entered in standard MODBUS format (0-65535). If you are accustomed to specifying register addresses in "Modicon format", simply subtract 1 from the Modicon Address and delete the prefix number. For example, Modicon Holding Register 40101 is equivalent to MODBUS address 100.
The app supports a wide range of data representations including:
Unsigned Integer: 16 bit, 32 bit, and 64 bit
Signed Integer: 16 bit, 32 bit, and 64 bit
Floating Point: 32-bit, and 64-bit using IEEE-754 specifications
Hex Data Strings: 16-bit, 32 bit, and 64-bit
Bit and Byte Representations for Coils & Discrete Inputs
The app also supports the following "reverse modes" of floating point data storage:
Atomic 8-bit Little Endian
Atomic 16-bit Little Endian
PDP Endian
Bit Reversal
When you exit the Comm Setup page, WiFi connections will be established automatically; however, a manual scan must be initiated to find and select a BLE module within range in order to establish a Bluetooth connection. After a successful Wifi or BLE connection, simply tap the Start Poll button to send your poll command (when in client mode). If you turn the Continuous Poll switch on, the Start Poll button will change to a Stop Poll button while the poll is in progress. When in server mode, the app will wait for and respond to poll requests from a master device once a WiFi or BLE connection is made.
A communication status window will show the raw byte strings that are sent to and received from a remote device. Received data will also be shown in tabular form when in client mode and communication events will be shown when in server mode. The app also tracks a number of communication statistics.
When using WiFi your device must be on the network as the device that you want to test. Be sure to use the Settings app to configure your network settings before using the app or you will surely get socket connection errors.
The app contains no ads or in-app purchases and we will never nag you for reviews, although we do appreciate them. We appreciate your feedback and the app includes a convenient email form to send us comments or suggestions. If you have any issues with the app, please send us a message before posting a negative review and give us a chance to address your concerns.
What's New in Version 1.05
Bug Fixes and UI Improvements - this version corrects a problem where some displays were the wrong size on iPod Touch 7th Gen and iPhone SE 1st Gen; also improved touches on some buttons and improved alignment of some displays.
Information
Developer
Categories
Version
1.05
Size
18.6 MB
Game Center
No
VPP Device Licensing
Yes
Rating
Rated: 4+
Compatibility
iOS 13.0 or later
Devices
iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2nd generation), iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone SE (3rd generation), iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPad (5th Generation) Wi-Fi, iPad (5th Generation) Wi-Fi + Cellular, iPad (6th generation) Wi-Fi, iPad (6th generation) Wi-Fi + Cellular, iPad Pro, iPad Pro (Cellular), iPad Pro (9.7-inch), iPad Pro (9.7-inch) (Cellular), iPad Pro 12.9-inch (2nd generation), iPad Pro 12.9-inch (2nd generation) Wi-Fi + Cellular, iPad Pro (10.5-inch), iPad Pro (10.5-inch) Wi-Fi + Cellular, iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro 12.9-inch (3rd generation), iPad Pro 12.9-inch (3rd generation) Wi-Fi + Cellular, iPad Air, iPad Air (Cellular), iPad Air 2, iPad Air 2 (Cellular), iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPad mini Retina, iPad mini Retina (Cellular), iPad mini 3, iPad mini 3 (Cellular), iPad mini 4, iPad mini 4 (Cellular), iPad mini (5th Generation), iPad mini (5th Generation) Wi-Fi + Cellular, iPad (7th generation) Wi-Fi + Cellular, iPad Pro 11-inch (2nd generation), iPad Pro 11-inch (2nd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (4th generation), iPad Pro 12.9-inch (4th generation) Wi-Fi + Cellular, iPad Air (4th Generation) (Wi-Fi), iPad Air (4th Generation) (Wi-Fi + Cellular), iPad (8th generation) Wi-Fi, iPad (8th generation) Wi-Fi + Cellular, iPad Pro 11-inch (3rd generation), iPad Pro 11-inch (3rd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (5th Generation), iPad Pro 12.9-inch (5th Generation) Wi-Fi + Cellular, iPad (9th Generation), iPad (9th Generation) Wi-Fi + Cellular, iPad mini (6th Generation), iPad mini (6th Generation) Wi-Fi + Cellular, iPad Air (5th generation), iPad Air (5th generation) Wi-Fi + Cellular, iPad Pro 11-inch (4th generation), iPad Pro 11-inch (4th generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (6th generation), iPad Pro 12.9-inch (6th generation) Wi-Fi + Cellular, iPad (10th generation), iPad (10th generation) Wi-Fi + Cellular, iPod touch (6th Generation), iPod touch (7th generation)
Languages
English
App Store: Customer Ratings
Ratings & Reviews
0.0 of 5 (No rating)
App Store: Customer Reviews
No Entry