A&D AD-4408A Instruction Manual Page 1

AD-4408A Weighing Indicator for Modbus-RTU Interface AX-ABCC-MODBUS INSTRUCTION MANUAL 1WMPD4001975

8 Step 5 Change the setting value using either one of the methods below. Method Description Selecting a parameter Only the parameter number to be s

94. Modbus Memory 4.1. Memory Map Modbus uses reference numbers and addresses to control the AD-4408A or to read data. The AD-4408A uses Holding Reg

10 Table 6 Input Register memory map Input Register (Read only Word data Reference No. 3) Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2

11 15 14 1213 11 10 9 78653 4 2 1 0 Command response Third word of Input Register

12 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Net weight Fifth word of Input RegisterWeight value (Low order word) Bit 15 14 13

134.2. Handling Bits Directly 4.2.1. Handling Command Bits A command bit is in the first word of the Holding Register. A command response is i

145. Timing Chart Slave Normal Operation Slave normal operation is a signal to confirm that the AD-4408A is connected to the power and is in normal

156. Errors 6.1. Error Types Error Status Flag This conveys to the master device that an error has occurred. Turn the error reset flag ON to reques

167. Check Mode 7.1. Checking the Modbus-RTU Communication Status 7.1.1. Entering the Check Mode Step 1 While pressing and holding the ENTER key

17 Checking the Communication Status Press the ∧ or ∨ key to change addresses. Address Data type Word 01 Holding Register 1 11 to

WARNING DEFINITIONS The warnings described in this manual have the following meanings: A potentially hazardous situation which, if not avoided, c

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1 Contents 1. Introduction...2 2.

21. Introduction The AD-4408A functions as a slave device of Modbus (RTU) when the Modbus-RTU interface module (AX-ABCC-MODBUS) is installed. A

32. Description of Each Part Fig.1 Interface module part names NOTE: 1. A TORX® driver (size T9) to fasten the retaining screws is

4 Table 2 Communication LED (COM) LED state Description OFF Offline / No power Yellow ON Online (Normal) Red ON Communication error 2.2. Co

53. Installation 3.1. Interface Module Installation Install the interface module as follows: Step 1 Using a Phillips screwdriver, loosen

63.2 . Connections and Functions 3.2.1. Cable Connections By connector pin connections, a signal level can be selected either for RS-232 or RS-

7 3.2.2. Setting the Functions The functions described here are general functions. General functions are divided into groups per function and are ind