mb2hal

NAME
SYNOPSIS
DESCRIPTION
PINS
fnct_01_read_coils:
fnct_02_read_discrete_inputs:
fnct_03_read_holding_registers:
fnct_04_read_input_registers:
fnct_05_write_single_coil:
fnct_06_write_single_register:
fnct_15_write_multiple_coils:
fnct_16_write_multiple_registers:
Each transaction
AUTHOR
LICENSE

NAME

mb2hal - HAL userspace component for Modbus

SYNOPSIS

Default component name:

loadusr -W mb2hal config=config_file.ini

Custom component name:

loadusr -Wn mymodule mb2hal config=config_file.ini

DESCRIPTION

MB2HAL is a generic userspace HAL component to communicate with one or more Modbus devices. It supoorts Modbus RTU and Modbus TCP.

See http://linuxcnc.org/docs/html/drivers/mb2hal.html for more information.

PINS

fnct_01_read_coils:

mb2hal.m.n.bit bit out
mb2hal.m.n.bit-inv
bit out

fnct_02_read_discrete_inputs:

mb2hal.m.n.bit bit out
mb2hal.m.n.bit-inv
bit out

fnct_03_read_holding_registers:

mb2hal.m.n.float float out
mb2hal.m.n.int
s32 out

fnct_04_read_input_registers:

mb2hal.m.n.float float out
mb2hal.m.n.int
s32 out

fnct_05_write_single_coil:

mb2hal.m.n.bit bit in

NELEMENTS needs to be 1 or PIN_NAMES must contain just one name.

fnct_06_write_single_register:

mb2hal.m.n.float float in
mb2hal.m.n.int
s32 in

NELEMENTS needs to be 1 or PIN_NAMES must contain just one name. Both pin values are added and limited to 65535 (UINT16_MAX). Use one and let the other open (read as 0).

fnct_15_write_multiple_coils:

mb2hal.m.n.bit bit in

fnct_16_write_multiple_registers:

mb2hal.m.n.float float in
mb2hal.m.n.int
s32 in

Both pin values are added and limited to 65535 (UINT16_MAX). Use one and let the other open (read as 0).

Each transaction

mb2hal.m.num_errors u32 in

Error counter

m = HAL_TX_NAME or transaction number if not set, n = element number (NELEMENTS)
Example:
mb2hal.00.01.int (TRANSACTION_00, second register)
mb2hal.readStatus.01.bit (HAL_TX_NAME=readStatus, first bit)

AUTHOR

Victor Rocco

LICENSE

GPL