6-9
IM 2553A-01EN
Temperature-Sensor-Simulation Thermoelectromotive-Force and Resistance Sourcing
3
2
1
4
5
6
7
8
9
10
11
12
13
14
App
Index
If User-Defined Data Contains Errors
In step 10, the 2553A checks for errors in the data. If an error is found, the 7-segment LED will display
an error code, and the contents in the internal memory of the 2553A will not updated.
Explanation
This section explains how to write user-defined data. After writing user-defined data to the 2553A, you
can use the TEMPERATURE dial to set the source type to TC USER or RTD USER and source the
user-defined thermocouple thermoelectromotive force or RTD resistance. For the procedure to select
the source type, see section 6.1. For the data definition specifications, see appendix 4.
Mass Storage Feature
To exchange user-defined data files between the 2553A and PC, the 2553A’s USB communication
feature must be set to mass storage.
To remotely control the 2553A with communication commands, the USB communication feature must
be set to remote control protocol (TMC). For the procedure, see section 9.3.
Connecting the 2553A to the PC through USB
The USB port on the rear panel of the 2553A is type B. The USB port on the PC is type A. Connect the
2553A to the PC using a USB cable with a type B connector on one end and type A connector on the
other.
Note
• You can connect the USB cable before or after the 2553A and PC have started. Do not connect the cable
while they are in the middle of the startup procedure.
• Do not connect or remove the USB cable while user-defined data is being written. Doing so may prevent
the data from being written correctly. It may also cause the 2553A or PC to run abnormally.
2553A IN and 2553A OUT Folders
If the 2553A and PC are running normally and the 2553A’s USB communication feature is set to mass
storage, when you connect them with a USB cable, 2553A IN and 2553A OUT drives appear in the
computer folder of the PC.
• When the USB cable is connected, the PC’s autoplay feature may be activated for the 2553A IN
and 2553A OUT drives. If this happens, you can also open the folders by clicking Open folder to
view files in the autoplay window.
• The 2553A IN folder is a read/write folder. This is where you place user-defined data files to be
written to the 2553A.
• The 2553A OUT folder is a read-only folder. This is where the contents of the user-defined data
written in the 2553A’s internal memory are saved in a file.
Writing User-Defined Data
The ejection of the 2553A IN drive causes the user-defined data to be written to the 2553A’s internal
memory. If written data already exists, it will be updated.
• When the data is written, the file in the 2553A IN folder is deleted.
• When the data is written, the data written in the 2553A’s internal memory is saved as a file in the
2553A OUT folder. The file data is updated.
• Since the 2553A OUT folder is read-only, you can use a text editor to view the file in the folder, but
you cannot save or delete the file.
• You can delete the data written in the 2553A’s internal memory by using a communication
command. For details on user-definition commands, see “SOURce Group” in chapter 11.
6.4 Writing User-Defined Data
