Anybus Communicator Modbus plus, User Manual

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Doc.Id. SCM-1200-093
Anybus Communicator for Modbus Plus
Doc.Rev. 3.01
4.2 ABC Parameters
(Select ‘ABC’ in the Navigation Section to gain access to the parameters
described in this section).
Interface
Currently, only serial communication is supported.
Status / Control Word
(See “Control and Status Registers” on page 67).
Module Reset
This parameter specifies how the gateway will behave in the event of a fatal error.
Protocol Mode
This parameter specifies which protocol mode to use for the subnetwork.
See also “Protocol Modes” on page 19.
Value Description
Enabled Enable the Control and Status Registers. The ‘Data Valid’-bit in the Control Register must
be set to start the subnetwork communication.
Enabled but no startup lock This setting is similar to ‘Enabled’, except that the control system is not required to set the
‘Data Valid’-bit to start the subnetwork communication.
Disabled This setting completely disables the Control and Status Registers.
Value Description
Enabled The gateway will be restarted, and no error will be indicated to the user.
Disabled The gateway will halt and indicate an error.
Value Description
Generic Data Mode This mode is primarily intended for Produce & Consume-based protocols, where there are
no Master-Slave relationship between the gateway and the nodes on the subnetwork.
Master Mode This mode is intended for ‘Query & Response’-based protocols, where a single Master
exchanges data with a number of Slaves.
DF1 This mode is intended for the DF1 protocol. The Anybus Communicator can only be con-
figured as a Master with half-duplex communication.
Note: This is the only mode available if you intend to configure an ABC module for DF1.