Linx Technologies TRM-915-R250 - Manual (Page 18)

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Module Configuration
The 250 Series module contains several registers that control its
configuration and operation. The module’s default settings allow it to
operate out of the box without any changes; however the registers allow
the link to be customized to better suit the application if necessary. The
register settings are stored in two types of memory inside the module.
Volatile memory is quick to access, but it is lost when power is removed
from the module. Non-volatile memory takes longer to access, but is
retained when power is removed.
All of the configuration settings have registers in both types of memory.
The settings are read from non-volatile registers on power up and saved in
volatile registers. The values in the volatile registers are used during normal
operation since it is faster to read and write the volatile memory locations.
There are commands to read and write both locations.
Figure 21 shows the volatile read-only registers. Figure 22 shows the
volatile read and write registers. Figure 23 shows the non-volatile read-only
registers. Figure 24 shows the non-volatile read and write registers.
Figure 21: 250 Series Volatile Read Only Configuration Registers
Figure 22: 250 Series Volatile Read / Write Configuration Registers
250 Series Volatile Read / Write Configuration Registers
Name Address Description
regCRCERRCOUNT 0x40 CRC error count value
regHOPTABLE 0x4B Hop table
regPWRMODE 0x4D Power amplifier setting
regUARTDATARATE 0x4E UART data rate
regNETWORKMODE 0x4F Sets the networking mode
regTXTO 0x50 UART to transmit timeout
regMAXTXRETRY 0x52 Maximum times to retry packet transmission
regUSECRC 0x53 Enable / Disable CRC checking
regUARTMTU 0x54 Minimum transmission unit
regCSMAMODE 0x56 Enable / Disable CSMA
250 Series Volatile Read-Only Configuration Registers
Name Address Description
regEXCEPTION 0x79 Stores latest exception code
regLGPRSSI 0x7B Last Good Packet RSSI value
regIMMEDRSSI 0x7C Current RSSI value
250 Series Volatile Read / Write Configuration Registers Continued
Name Address Description
regOPMODE 0x58 Sets operating mode
regACKONWAKE 0x59 Enable / Disable ACK sent to UART upon wake
regUSERDESTID[3] 0x5A
Destination Address for Extended User Networking
Mode
regUSERDESTID[2] 0x5B
Destination Address for Extended User Networking
Mode
regUSERDESTID[1] 0x5C
Destination Address for User and Extended User
Networking Mode
regUSERDESTID[0] 0x5D
Destination Address for User and Extended User
Networking Mode
regUSERSRCID[3] 0x5E
Source Address for Extended User Networking
Mode
regUSERSRCID[2] 0x5F
Source Address for Extended User Networking
Mode
regUSERSRCID[1] 0x60
Source Address for User and Extended User
Networking Mode
regUSERSRCID[0] 0x61
Source Address for User and Extended User
Networking Mode
regUSERIDMASK[3] 0x62 Address Mask for Extended User Networking Mode
regUSERIDMASK[2] 0x63 Address Mask for Extended User Networking Mode
regUSERIDMASK[1] 0x64
Address Mask for User and Extended User
Networking Mode
regUSERIDMASK[0] 0x65
Address Mask for User and Extended User
Networking Mode
regDESTGUID[3] 0x68 GUID Networking Mode Destination Address
regDESTGUID[2] 0x69 GUID Networking Mode Destination Address
regDESTGUID[1] 0x6A GUID Networking Mode Destination Address
regDESTGUID[0] 0x6B GUID Networking Mode Destination Address
regEXCEPTIONMASK 0x6C Exception and Mask used to activate the EX line
regCMDHALT 0x6E Half RF traffic when the CMD line is low
regLNAMODE 0x6F Receiver LNA gain / linearity setting
regCOMPATMODE 0x70
Compatibility mode for 25 and 250
intercommunication
regAUTADD 0x71 Sets automatic addressing
Warning: Modules that are not configured in the same way will not be
able to communicate reliably, causing poor performance or outright
failure of the wireless link. All modules in a network must have compatible
configurations to ensure interoperability.