Collects an address for the read window, then returns its value.
Register address.
The register value, or a Modbus error.
Collects a group as one reader and returns values in the requested order.
Register addresses, in result order.
Register values in the requested order, or a Modbus error.
Adds a group and flushes collected reads immediately.
Register addresses, in result order.
Register values in the requested order, or a Modbus error.
Adds an address and flushes collected reads immediately.
Register address.
The register value, or a Modbus error.
Reads over one register space.