ECAN-240-FD (Modbus TCP to 2-port CAN FD Gateway) User Manual
Version 1.0.0
Page
：
50
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5.1.1.4 CAN Rx Buffer Address
The CAN1/2 port support CAN Rx Buffer. When the received CAN frame matched the “Specific
CAN ID” setting (refer to
Section 4.3.2 Sepecfic CAN ID Settings
), this CAN frame will be saved
into the relatived “CAN Rx Buffer”. By using Modbus function code 0x04 read command to read
the protocol base address of “1024~1423” and “5120~5519”, user can get the received CAN
message from CAN1/2 Rx Buffer.
CAN1 Rx Buffer Message #00 ~ #09
Protocol
Base Address
(0xxxx)
PLC
Base Address
(3xxxx)
Words Description
01024 ~ 01063
31025 ~ 31064
40
CAN1 Rx Buffer Message #00
01064 ~ 01103
31065 ~ 31104
40
CAN1 Rx Buffer Message #01
01104 ~ 01143
31105 ~ 31144
40
CAN1 Rx Buffer Message #02
01144 ~ 01183
31145 ~ 31184
40
CAN1 Rx Buffer Message #03
01184 ~ 01223
31185 ~ 31224
40
CAN1 Rx Buffer Message #04
01224 ~ 01263
31225 ~ 31264
40
CAN1 Rx Buffer Message #05
01264 ~ 01303
31265 ~ 31304
40
CAN1 Rx Buffer Message #06
01304 ~ 01343
31305 ~ 31344
40
CAN1 Rx Buffer Message #07
01344 ~ 01383
31345 ~ 31384
40
CAN1 Rx Buffer Message #08
01384 ~ 01423
31385 ~ 31424
40
CAN1 Rx Buffer Message #09
CAN2 Rx Buffer Message #00 ~ #09
Protocol
Base Address
(0xxxx)
PLC
Base Address
(3xxxx)
Words Description
05120 ~ 05159
35121 ~ 35160
40
CAN2 Rx Buffer Message #0
05160 ~ 05199
35161 ~ 35200
40
CAN2 Rx Buffer Message #1
05200 ~ 05239
35201 ~ 35240
40
CAN2 Rx Buffer Message #2
05240 ~ 05279
35241 ~ 35280
40
CAN2 Rx Buffer Message #3
05280 ~ 05319
35281 ~ 35320
40
CAN2 Rx Buffer Message #4
05320 ~ 05359
35321 ~ 35360
40
CAN2 Rx Buffer Message #5
05360 ~ 05399
35361 ~ 35400
40
CAN2 Rx Buffer Message #6
05400 ~ 05439
35401 ~ 35440
40
CAN2 Rx Buffer Message #7
05440 ~ 05479
35441 ~ 35480
40
CAN2 Rx Buffer Message #8
05480 ~ 05519
35481 ~ 35520
40
CAN2 Rx Buffer Message #9
