SDO communication from the PLC

ADS blocks are used for SDO communication from the PLC. These blocks can be used for sending SDO telegrams and receiving the response of the slave (ADSWRITE/ADSREAD).

Input parameters	Description
NETID	Local NetId of the BX or leave empty, e.g. with ''
Port number	0x1000_hex + NodeId (slave number)
IDXGRP	SDO Index
IDXOFFS	SDO Subindex
LEN	Length of SDO data (1...4)

SDO communication from the PLC 1: Download BX (sample file)

Setting individual or all nodes to pre-operational or operational state

The ADSWRTCTL function block can be used for setting individual CANopen nodes or all slaves to pre-operational or operational state.

Input parameters	Description
NETID	Local NetId of the BX or leave empty, e.g. with ''
Port number	0x1000_hex + NodeId (slave number) / 153_dec (all nodes)
ADSSTATE	ADSSTATE_RUN
DEVSTATE	1 - Pre / 0 - Operational
LEN	0
SRCADDR	0

SDO communication from the PLC 2: Download BX (sample file)

op_pre_operational.prx

Restarting the SSB interface

The ADSWRTCTL function block can be used to stop and restart the SSB. It should be stopped first before restarting it.

Input parameters	Description
NETID	Local NetId of the BX or leave empty, e.g. with ''
Port number	153_dec
ADSSTATE	ADSSTATE_STOP, ADSSTATE_RUN
DEVSTATE	0
LEN	0
SRCADDR	0

Input parameters	Description (from software version 1.16 for all BX controllers)
NETID	Local NetId of the BX or leave empty, e.g. with ''
Port number	300_dec
ADSSTATE	ADSSTATE_RESET
DEVSTATE	0
LEN	4
SRCADDR	ADR on a DWORD variable with the ID of the SSB device (the ID can be obtained from the System Manager file and is typically a value between 1 and 3).