User's Manual

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8.2.5 MAC_DefaultAddressMode: Conﬁgure the address mode

Settings

index

Designation

Permissible

values

Default value Permissions

Number

Bytes

MAC_DefaultAddressMode

0 - 3

0 read/write

This setting deﬁnes the address mode of the module. The following modes have been

implemented:

No addressing (mode 0): Each module receives the transmitted RF telegram and delivers

the received data to the host system via UART. No address information is transmitted

in the radio telegram.

1-byte address (mode 1): The receiving module only delivers the data to the host system

via UART,

• if the 1 Byte destination address conﬁgured at the sender corresponds to the

1 Byte source address of the receiver (

MAC_SourceAddr

) or

• if the destination broadcast address 255 was speciﬁed.

Both, the destination address and the source address are transmitted in the wireless

telegram (total = 2 Bytes).

2-Bytes address (mode 2): The receiving module only delivers the data to the host system

via UART,

• if both the destination network id and the 1 Byte destination address conﬁgured at

the sender correspond to the source addresses of the receiver (

MAC_SourceNetID

and 1 Byte

MAC_SourceAddr

) or

• if the destination broadcast address 255 and/or network broadcast id 255 was

speciﬁed.

A total of 4 Bytes of address information are transmitted in the wireless telegram.

2-Bytes address (mode 3): The receiving module only delivers the data to the host system

via UART,

• if both the destination network id and the 2 Byte destination address conﬁgured

at the sender correspond to the source addresses (

MAC_SourceNetID

and 2 Byte

MAC_SourceAddr

) of the receiver or

• if the destination broadcast address 65535 and network broadcast id 255 was

speciﬁed.

A total of 6 Bytes of address information are transmitted in the wireless telegram.

In address mode 0, the use of wireless acknowledgement will cause problems

if several wireless modules are addressed simultaneously. Therefore, no ACK

is requested when using address mode 0 or when having any broadcast ad-

dress in the frame (destination net ID and/or destination address). The user

shall also not set

MAC_NumRetrys

6= 0 in address mode 0.