BECKHOFF KL1501 - Manual (Page 9)

Terminal configuration
KL1501 7
3.1 Register Overview
Register No. Description Default R/W Storage medium
R0 not used 0x0000 R
... ... ... ... ...
R5 not used 0x0000 R
R6 Diagnostic register – not used 0x0000 R
R7 Command register - not used 0x0000 R
R8 Terminal type 1501 R ROM
R9 Software version number 0x???? R ROM
R10 Multiplex-shift register 0x0130 R ROM
R11 Signal channels 0x0128 R ROM
R12 minimum data length 0x2828 R ROM
R13 Data structure 0x0000 R ROM
R14 not used 0x0000 R
R15 Alignment-register variable R/W RAM
R16 Hardware version number 0x???? R/W SEEROM
R17 not used 0x0000 R/W SEEROM
... ... ... ... ...
R30 not used 0x0000 R/W SEEROM
R31 Code word register variable R/W RAM
R32 Feature register 0x0100 R/W SEEROM
R33 not used 0x0000 R/W SEEROM
... ... ... ... ...
R63 not used 0x0000 R/W SEEROM
3.2 Register description
The complex terminals can be adjusted to different operating modes or
functionalities. The General Description of Register describes the contents
of the registers, which are identical for all complex terminals.
The terminal-specific registers are explained in the section following to it.
The access to the internal registers of the terminal is described in the
section Register Communication.
3.2.1 General register description
Complex terminals that possess a processor are capable of bidirectionally
ex-changing data with the higher-level control system. Below, these
terminals are referred to as intelligent bus terminals. They include the
analog inputs, the analog outputs, serial interface terminals (RS485,
RS232, TTY etc.), counter terminals, encoder interfaces, SSI interfaces,
PWM terminals and all other parameterizable terminals.
Internally, all intelligent terminals possess a data structure that is identical
in terms of it's essential characteristics. This data area is organized in
words and embraces 64 registers. The essential data and parameters of
the terminal can be read and adjusted by way of the structure. Function
calls with corresponding parameters are also possible. Each logical
channel of an intelligent terminal has such a structure (therefore, 4-channel
analog terminals have 4 register sets.