Supported PLC Registers

This page is the canonical public register table for the Python high-level API.

Supported Bit Devices

Family	Kind	Example	Notes
R	bit	R200	direct bit access
B	bit	B10	direct bit access
MR	bit	MR100	direct bit access
LR	bit	LR10	direct bit access
CR	bit	CR0	direct bit access
VB	bit	VB0	direct bit access
X	bit	X10	direct bit access
Y	bit	Y10	direct bit access
M	bit	M100	direct bit access
L	bit	L100	direct bit access

Supported Word Devices

Family	Kind	Example	Notes
DM	word	DM100	recommended first test area
EM	word	EM100	high-level word access
FM	word	FM100	high-level word access
ZF	word	ZF100	high-level word access
W	word	W100	high-level word access
TM	word	TM100	high-level word access
Z	word	Z10	high-level word access
TC	word	TC10	word access
TS	word	TS10	word access
CC	word	CC10	word access
CS	word	CS10	word access
CM	word	CM10	word access
VM	word	VM10	word access
D	word	D10	word access
E	word	E10	word access
F	word	F10	word access

High-Level Views

Form	Example	Meaning
plain word	DM100	unsigned 16-bit word
signed view	DM100:S	signed 16-bit value
dword view	DM100:D	unsigned 32-bit value
long view	DM100:L	signed 32-bit value
float view	DM100:F	float32 value
bit in word	DM100.3 or DM100.A	one bit inside a word
timer scalar	T10:D	high-level typed timer value
counter scalar	C10:D	high-level typed counter value

Addressing Notes

• Start with DM.
• Bit-in-word updates belong on word devices, not direct bit families.
• normalize_address("dm100.a") returns the canonical uppercase form.
• If a family is not listed above, do not treat it as publicly supported by the current high-level API.