ComAp InteliMains 210 BTB, Global Manual

Page: 148 / 576

InteliMains 210 Global Guide
148
MODBUS/TCP can be used on the ethernet interface (CM-Ethernet module is required). Up to 2 clients can
be connected simultaneously. The MODBUS/TCP server must be activated by the setpoint MODBUS Server
(page 291) .
MODBUS, MODBUS/TCP protocol can be used simultaneously with Web connection and direct
ethernet/AirGate connection.
The MODBUS, MODBUS/TCP protocol is enabled alternatively with the SNMP protocol, so both protocols can
not be active simultaneously.
IMPORTANT: Do not write setpoint repeatedly(e.g. power control form a PLC repeated writing of
baseload setpoint via Modbus). The setpoints are stored in EEPROM memory. which can be
overwritten up to 10
5
times without risk of damage or data loss, but may become damaged, when
the allowed number of writing cycles is exceeded!
Address space
The object address space is separated into several areas as described in the table below. The actual mapping of
specific controller data objects to specific MODBUS addresses, which depends on configuration, can be
exported into a text file from the appropriate controller archive using InteliConfig. There are several special
registers with fixed meaning (reserved registers) which are listed in a separate table in this chapter.
MODBUS
address
Meaning Access
MODICON object
type
MODBUS function
0000 .. 0999 Binary objects Read only Discrete Inputs Read: 01, 02
1000 .. 2999 Values Read only Input Registers Read: 03, 04
3000 .. 3999 Setpoints Read/Write Holding Registers
Read: 03, 04
Write: 06, 16
4200 .. 7167
Reserved
registers
Read/Write, depends on
each specific register
Input Registers
Holding Registers
Read: 03, 04
Write: 06, 16
Configurable part of the map
The contents of the configurable part of the map is specified in the configuration table. It can be changed by the
customer as well as exported in a human-readable format using the configuration tool.
Discrete inputs
The discrete inputs are read-only objects located in the address range 0-999. The source ComAp objects for
discrete inputs can be:
Single bit of any value of any binary type.
Protection (e.g. 2nd-level protection of the state "xyz"). The input is high if the protection is active regardless
of if it is configured or not.
Input registers
The input registers are read-only numeric values located in the address range 1000-2999. The source ComAp
objects can be:
Any controller value of any data type. The mapping of the particular data type into registers is described in
Mapping data types to registers (page 149) .
Holding registers