Toshiba OIS Series, Руководство пользователя

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Frequently Asked Questions
7.1 How Do I ?
This chapter answers the questions users often times ask.
1. How do I read PLC data?
To read any PLC data, the required tag should be defined in the Tag Database. In a screen the tag
should be embedded in the required format.
2. Can I edit PLC data? How?
Any PLC register / coil can be edited except for ‘Read only’ registers / coils. Generally System registers
and Input coils are ‘Read only’. ‘Read only’ registers / coils vary from PLC to PLC. Please refer to PLC
manual for details. To edit any PLC data define the tag in Tag Database. Place a ‘Data Entry’ object in a
screen. Make sure to define the required keys. Register and Coil data entry key definitions are given in
Table 4.2 and Table 4.3.
3. Can I keep a record of the Process data?
OIS60 model can send screen data (Alphanumeric data only) on its serial port. This output can be given
to a serial printer and a record of events can be achieved. A screen with ‘Print Data’ task can print all the
alphanumeric objects.
4. Can I change screens using PLC logic?
Any PLC tag can be copied to STR, a system register internal to OIS, and OIS will display the corre-
sponding screen. User must define the task ‘Copy tag to STR’ in Global Application Task-List. Make sure
to define screens to all the possible values of the tag to avoid ‘Screen not defined’ message. Please note
that the ‘Goto screen’, ‘Goto next screen’ and ‘Goto previous screen’ tasks will not work in this case. To
change the screen the value of the PLC data should be changed.
5. Can I perform any task continuously?
To perform any task, continuously define the task in Global Application Task-List. This task will be per-
formed till the unit is powered down.
6. How can I ‘Hold’ any Bit on or off using a key?
To hold a bit on using a key, define ‘Turn bit on’ task in ‘Key press task-list’ and ‘Turn bit off’ task in
‘Release key task-list’ for the same key.
7. How do I keep any screen or any key locked?
Any screen or a key can be kept secret using the ‘Password’ feature of OIS60. Password protected screen
will not be displayed till the user enters the correct password. Similarly task for password protected key
will not be performed till user enters the correct password
8. Can I assign scaling factor for any tag?
Value of any tag can be converted in to the required format by performing ‘Math Operations’ on it. This
DOES not change the value of the actual tag. ‘Math Operations’ can be performed in ‘Display OIS / PLC
Data’ objects. Data to be written to a tag can also be manipulated by assigning ‘Math Operations’ in ‘Data
Entry’ object.
9. Can I limit the data to be entered in a tag?
Data entered in any register tag can have high and low limits. This keeps a check on the register limits.
Refer to ‘Configuration software’ section for detailed information on how to define an application