Filter
Top Products
6F3B0250
Basic Hardware and Function
111
6. Programming Information
System information
System information is the area which stores execution control parameters. The following
contents are included in the system information.
(1) Machine parameters (hardware type, memory type)
(2) User program information (program ID, system comments, number of steps used)
(3) Passwords
(4) Retentive register area information
(5) T1S program memory mode, 4 k steps or 8 k steps (T1S only)
(6) Execution control parameters (scan mode, timer interrupt interval)
(7) Station number setting for programmer port (T1), or RS-485 port communication
parameters (T1S)
(8) I/O allocation table
(9) Input force table
The system information is stored in the built-in EEPROM. Therefore, when these
information is modified, the EEPROM write operation is necessary. Otherwise, these are
over-written by original EEPROM contents at the next initial load timing.
User program
The T1 has a capacity of 2 k steps of the user program. And the T1S has a capacity of 8
k steps of the user program.
The user program is stored by each program types as shown in the following diagram,
and is managed by units called blocks in each program types.
User program configuration Program type internal configuration
(Program types) (Blocks)
Subroutine
I/O interrupt #4
I/O interrupt #3
I/O interrupt #2
I/O interrupt #1
Timer interrupt
Sub-program #1
Block 1
Block N
(N = max. 256)
Block 10
Block 2
Block 1
Main program
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net