Premium I/O Scanner Configuration
Original instructions
About us
Introduction
Use the I/O Scanner to transfer data between master and slave devices.
NOTE: The I/O Scanner does not work if you enable the device control block with outdated versions of the firmware or software.
If you enable the device control block, you must have Unity Pro V2.0 or later and:
If you are using:
they must be at:
TSX ETY 4103 or -5103 Ethernet communications modules
version 3.1 or later
TSX P57 1634, -2634 or -3634 ETY ports
version 3.1 or later
TSX P57 4634, -5634 or -6634 CPUs
version 2.0 or later
I/O Scanner Configuration Dialog
Click the I/O Scanner tab on the Network Configuration screen to display the I/O Scanner configuration dialog. Set the desired configuration parameters by entering data in the appropriate fields.
I/O Scanner for an ETY Module
Illustration of an I/O Scanner screen for an ETY module:
Master %MW zone parameters found only on the ETY module screen:
Parameter
Field
Description
Read Ref.
From and to data boxes
The values in these boxes define the range of destination address values in the CPU for the data read from each device. The addresses you enter here are displayed in the RD Master Object column of the dialog. In the example above, the Read Ref. values range from 0 to 599; notice that these values are displayed as %MW0, %MW599, etc. in the Master Object column.
Write Ref.
From and to data boxes
The values in these boxes define the range of source address values in the CPU. The address you enter here is displayed in the WR Master Object column. In the example above, values starting at %MW2000 are shown in the WR Master Object column.
I/O Scanner for a TSX P57 4634, TSX P57 5634 or TSX P57 6634 CPU
Illustration of an I/O Scanner screen for a CPU:
Common I/O Scanner Parameters above I/O Scanner Table
These parameters are common to both an ETY module and a CPU:
Parameter
Field
Description
Device Control Block
check box
If this box is checked, the device control block is enabled and the master can send requests to a slave. If the box is not checked, the device control block functionality is disabled and all I/O scanner table entries are active at all times.
From and to data boxes
If a Device Control Block bit is disabled, the I/O scanner closes the connection and sets the health bit to an unhealthy state (bit value = 1).
Repetitive Rate Step
data box
The Repetitive Rate Step is set in multiples of 5 ms (the minimum) through 200 ms (the maximum).
The Repetitive Rate column is where you enter a rate of time for how often you want the I/O scanner to send a query to the device after the rate has timed out.
NOTE: The Repetitive Rate of the I/O scanner table is a multiple of the rate displayed in the Repetitive Rate Step. The real repetitive rate being executed by the I/O scanner service is shown in the Repetitive Rate column.
NOTE: Note: An entry in the Repetitive Rate column is rounded up to the next multiple that was entered in the Repetitive Rate Step box if the entry is not a multiple of the Repetitive Rate Step.
For example, if the entry in the Repetitive Rate Step is 5 and you enter a 7 in the Repetitive Rate column, the 7 is rounded up to 10; if you change the Repetitive Rate Step to 6 and enter a 7 in the Repetitive Rate column, the 7 is rounded up to 12.
NOTE: For more information, refer to the Contextual Menu for Copy/Cut/Paste topic.
NOTE: For more information, refer to the I/O Scanning with Multiple Lines topic.
Common I/O Scanner Table Parameters
These parameters are common to both an ETY module and a CPU:
Parameter
Description
Examples
Entry #
This is the first column; it has no name.
Valid range: 1 ... 128
Each entry represents an I/O Scanning exchange on the network.
IP Address
This is the IP address of the scanned Ethernet slave device.
192.168.1.100
Device Name
To configure a device (Advantys island or DTM), click the ... button to open the Property box to start the device configuration software.
For an introduction to this procedure for Advantys, go here.
For an introduction to this procedure for DTMs, go to FDT Container.
NOTE: While the Property box is open, I/O scanning cannot be edited.
MySTB1 or Master_PRM_DTM_10
Unit ID
This field associates the slave address of the device connected to an Ethernet/Modbus gateway with the IP address of that gateway:
  • Value range: 1 to 255
  • Default value: 255
When using a bridge, enter the bridge index (1 to 255) in this field.
255
Slave Syntax
Use this drop-down menu to pick the way RD Ref Slave and WR Ref Slave values are displayed. The 4 choices are (with an example):
  • Index: 100
  • Modbus: 400101
  • IEC 0: %MW100
  • IEC 1: %MW101
Index (default value)
Health Timeout (ms)
This field sets the maximum interval between the responses from a remote device. After this time period expires, the received data is invalid. The Health Timeout must be longer than the Repetitive Rate time (ms). For a Premium ETY Ethernet module, it must be longer than the CPU scan time.
For the Health Timeout:
  • Range: 1 ms to 50 seconds
  • Interval: 1 ms
1500 ms
Repetitive rate (ms)
The rate at which data is scanned, from 0...50000 in multiples of the :
  • If you are running Unity Pro V3.1 or earlier with the following firmware versions:
    • ETY 4103/5103/Port (V4.0 or earlier): 10 ms
    • TSX P57 4634/5634/6634 (V2.5 or earlier): 10 ms
  • If you are running Unity Pro V4.0 or later with the following firmware versions:
    • ETY 4103/5103/Port (V4.1 or later): 5 - 200 ms
    • TSX P57 4634/5634/6634 (V2.6 or later): 5- 200 ms
60 ms (with a Repetitive Rate Step of 10 ms)
RD Master Object*
Destination address in the master PLC where, from each device, newly read information is stored
%mw10
RD Slave Ref.**
Source address index in the slave/remote device
The format of this value depends on the Slave Syntax:
  • Index: 5
  • Modbus: 400006
  • IEC 0: %MW5
  • IEC 1: %MW6
RD length
Number of words to read
10
Last value (Input)
This field configures the behavior of inputs in the event of an access error in relation to the remote device (for example: inoperative network or device power supply, etc.):
  • Set to 0: fall back to 0
  • Hold last: maintain last value
Hold last
WR Master Object*
Source address of the master PLC whose data is being written into the slave/remote device.
Write operations are always performed at the word level.
%mw20
WR Slave Ref.**
The address of the first word written into the slave/remote device.
The format of this value depends on the Slave Syntax:
  • Index: 1
  • Modbus: 400002
  • IEC 0: %MW1
  • IEC 1: %MW2
WR length
Number of words to be written
10
Gateway/Bridge Device
To allow slower TCP/IP network devices (i.e., gateways and bridges) to be compatible with the I/O Scanner:
  • Select the check box to enable this feature. Defines a new bit, and sets it to high (1).
  • Deselect the check box to disable this feature (default). Defines a new bit, and sets it to zero (0).
Values:
  • Disable: deselected check box
  • Enable: selected check box
Description
Additional information
*Master refers to the client PLC that makes the request.
**Slave refers to the server from which data is read or to which data is written.