Function mode of READ_REG blocks
Although a large number of READ_REG function blocks can be programmed, only four read operations may
be active at the same time. In such a case it is insignificant whether
they are the result of this function block or others (e.g. MBP_MSTR, CREAD_REG). All function blocks
use one data transaction path and require multiple cycles to complete
a job.
NOTE: A TCP/IP communication between a Quantum
PLC (NOE 211 00) and a Momentum PLC (all TCP/IP CPUs and all TCP/IP
I/O modules) is only possible, when only one read or write
job is carried out in every cycle. If several jobs are sent per PLC
cycle, the communication stops without generating an error message
in the status register of the function block.
All routing
information is contained in the WordArr5 data structure
of the ADDRFLD input. The type function block assigned
to this input is defined by the network used.
Please use:
Modbus Plus for function block
ModbusP_ADDRTCP/IP Ethernet for function block
TCP_IP_ADDRSY/MAX Ethernet for function block
SYMAX_IP_ADDR
NOTE: The
WordArr5 data structure
can also be used with constants.