This header file is generated by pvdevelop.
It contains definitions for the shared memory and the mailbox used to interface to modbus.
It is derived from your modbus ini-file.

// Modbus Signal assignment of modbusdaemon
#define modbusdaemon_SHARED_MEMORY "/srv/automation/shm/modbus.shm"
#define modbusdaemon_MAILBOX "/srv/automation/mbx/modbus.mbx"

#define modbusdaemon_CYCLE1_BASE 0
#define modbusdaemon_CYCLE1_NUM 10
#define modbusdaemon_CYCLE1_NUM_BYTES 2

#define modbusdaemon_SHARED_MEMORY_SIZE 2