30
BLÜCHER
®
CONNECTED ROOF - REV. 01 - OCTOBER 2020
Table 3. Modbus registers of the Gateway system
Gateway
Modbus
name
index value type
range and unit
object
type
object
access
size,
bit
address offset1
bit
offset
SRDP protocol version2
01
uint8
A (0 … 256)
input
register
R
16
00001
8-15
uint8
B (0 … 256)
00001
0-7
HW version2
02
uint8
A (0 … 256)
00002
8-15
uint8
B (0 … 256)
00002
0-7
SW version2
03
uint8
A (0 … 256)
00003
8-15
uint8
B (0 … 256)
00003
0-7
region
04
string of 2 ASCII characters
1st character
00004
8-15
2nd character
00004
0-7
number of configured
sensors
05
uint8
0 ... 99
00005
0-7
gateway tag
06
string of 32 ASCII characters
1st character
00006
8-15
2nd character
00006
0-7
…
…
…
31st character
00021
8-15
32nd character
00021
0-7
relay mode
22
uint4
“0: Temp mode
1: Alarm mode”
00022
0-3
relay state
bool
“0: Relay is opened
1: Relay is closed”
00022
4
sync time
31
uint32
UNIX Epoch time, seconds, 10-digit
holding
register
R/W
16
00031
00032
relay derogation mode
51
bool
“0: No derogation
1: Derogation enabled”
00051
0
relay derogation order
51
bool
“0: Open the relay
1: Close the relay”
00051
1
1 modbus address structure:
Xnnnn -> 0
nXXnn -> 00
nnnXX -> parameter index number for the gateway
2 version numbers are represented by “A.B” format - each letter is a single byte
