Communication Settings; Diagnostics; Network Data Exchange - Anybus CompactCom 40 Modbus-TCP Network Manual

Basic Operation
3.3

Communication Settings

As with other Anybus CompactCom products, network related communication settings are
grouped in the Network Configuration Object (04h).
In this case, this includes...
Ethernet Interface
Settings
IP Settings
Modbus-TCP
Connection Timeout
Process Active
Timeout
See also...
Network Configuration Object (04h), p. 29
Secure HICP (Secure Host IP Configuration Protocol), p. 51
3.4

Diagnostics

Each instance within the Diagnostic Object (02h) is represented on the network as a dedicated
entry in the Modbus register map (see
Note that since each entry corresponds directly to a specific diagnostic instance, it is possible to
have "empty" diagnostic entries in the register map (when read, such entries will return zeroes).
See also...
Input Registers (3x), p. 15
Diagnostic Object (02h), p. 27
3.5

Network Data Exchange

3.5.1 General
It is important to notice that various register areas might have different response times. Gener-
ally queries directed at the process data registers will be answered more quickly than those di-
rected at the ADI-related registers since the former are directly processed by the module itself
whereas the latter are forwarded to the application, which must respond before the module can
respond to the master. In the latter case this will influence the allowable timeout time for the
master to use for these registers.
®
Anybus CompactCom ™ 40 Modbus-TCP
By default, the module is set to autonegotiate the physical link settings. It is,
however, possible to force the module to use a specific setting if necessary.
These settings must be set properly in order for the module to be able to
participate on the network.
IP settings must be synchronized between the Anybus CompactCom 40 and the
host application.
The module supports DHCP, which may be used to retrieve the IP settings from a
DHCP-server automatically. DHCP is enabled by default, but can be disabled if
necessary.
This setting specifies how long a Modbus-TCP connection may be idle before it is
closed by the module (default is 60 seconds).
This value specifies how long the module shall stay in the 'PROCESS_ACTIVE'
state after receiving a Modbus-TCP request.
(04h), p. 29 for more information.
Note: This value can be accessed from the Modbus registers.
Note: This value affects the behavior of the SUP-bit. See
(Anybus Module Object)
Input Registers (3x), p.
®
Transparent Ethernet Network Guide
SeeNetwork Configuration Object
SUP-Bit Definition, p.
15).
SCM-1202-022 1.1
12 (70)
50.