This block is used to configure the A-B RIO interface option and data format. The two branches in this group are A-B RIO and Data Forma.
Figure 3-14: Setup Menu for A-B RIO
Additional interface information and programming examples can be found in the IND131/IND331 Terminal PLC Interface Manual, which is included on the documentation CD.
A-B RIO – F4.4.1
Provides access to address, rack position and data rate.
Node Address – F4.4.1.5
Each IND131 or IND331 Terminal connected to the network represents one physical node; however, the addressing of the node is defined as a logical rack
address. This address is determined by the system designer, then configured in the terminal by accessing the Node Address menu and entering the appropriate node address, from 0 to 62. The address entered in the IND131/331 terminal is decimal, while the address entered in the PLC is octal.
Start Quarter – F4.4.1.6
The block of data communicated from the terminal occupies a quarter rack (single group) in the RIO address space and the quarter (group) may be defined as the first (group 0) [1], second (group 2) [2], third (group 4) [3], or fourth (group 6) [4] quarter (group) of a rack. Designate the location to be used in a logical rack by selecting the appropriate start quarter address, from 1 to 4 (group 0–6), from the list.
Last Rack – F4.4.1.7
From the list, select Disabled [0] (the default) or Enabled [1] for last rack designation.
Data Rate – F4.4.1.8
In the Data Rate menu, select the desired data rate from these options: 57,600 [0] (default) 115,200 [1] 230,400 [2]
Data Format – F4.4.2
Provides access to the Format and Byte Order parameters.
Format – F4.4.2.1
The Format menu allows a data format to be selected from a list. Options are Division [0], Floating Point [1] and Integer [2] (the default).
Byte Order – F4.4.2.2
This parameter selects the order in which the data bytes and words will be
presented in the PLC data format. The choices are Byte Swap [0], Historic [1] (the default) and Word Swap [2].
• Byte Swap makes the floating point format compatible with S7 PROFIBUS. • Historic makes the floating point format compatible with PLC 5.
• Word Swap takes the IEE 754 single-precision floating point format and swaps the two words in the 32-bit double word. This format is compatible with RSLogix 5000 processors.
Analog Output – F4.4.1
This block is used to configure the 4-20mA Analog Output interface option and data format. The branches in this group are Source, Zero Value, Full Scale Value and Calibrate Output.
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Figure 3-15: Setup Menu for Analog Output
Additional interface information can be found in the IND131/IND331 Terminal PLC Interface Manual, which is included on the documentation CD.
Source – F4.4.1.1
The IND131/331 analog output option provides a 4 - 20 mA output signal which can represent either the weight or the rate. In the Source selection menu, select the output source as None [0] (the default), Displayed Weight [1], Gross Weight [2], Rate [3], ABS – Displayed weight [4] (absolute value of displayed weight), or ABS – Rate [5] (absolute value of rate).
Zero Value – F4.4.1.2
The Zero Value menu allows a numeric entry to be made, setting the displayed value equivalent for the analog output’s 4mA (zero) level. For a standard weighing application, this would be 00000 reflecting zero weight on the scale.
Note: It is not possible to enter a negative value here as the zero reference value. However, a negative value can be entered via the Variable Access index number 465.
Full Scale Value – F4.4.1.3
The Full Scale Value menu allows a numeric entry to be made, setting the displayed value equivalent for the analog output’s 20mA (full scale) level. For a standard weighing application, this would be the capacity of the scale.
Calibrate Output – F4.4.1.4
Pressing the PRINT key at the Calibrate Output menu initiates a calibration routine that allows correlation of the zero and full scale analog output points of the terminal to what the connected device is expecting. The procedure follows these steps:
1. First, a message is shown WARNING! Analog Output will change indicating that the analog output will be controlled by the terminal for calibration purposes and will not represent the weight or rate as normal.
2. After accepting this message by pressing PRINT, a second message appears – Signal now 4mA. Adjust then ENTER. Use the TARE key to increase the analog signal or the CLEAR key to decrease the analog output signal to fine tune the output for the 4mA (zero) reference. Press ENTER when done. 3. The message WARNING! Analog Output will change is shown again
indicating the analog output will change and is not related to the source value. Press PRINT to accept the message.
4. The next message is Signal now 20mA. Adjust then ENTER. Press the PRINT key to continue.
5. Use the TARE key to increase the analog signal or the CLEAR key to decrease the analog output signal to fine tune the output for the 20mA (full scale) reference. Press PRINT when done.
Reset – F4.5
The Reset menu enables the Communication setup block of values to be reset to factory default settings. To initiate a reset, press the PRINT key. A confirmation message appears, reading “WARNING Reset Communication?” Either press PRINT again to confirm the action, or ZERO to return to the Communication menu without resetting the values.
After a reset attempt, a status message of “Reset Successful” or “Reset Failed” will be shown indicating the status of the reset. Press PRINT to clear the message and return to the Reset menu branch.