SMAY iSWAY-FC, Руководство по эксплуатации и обслуживанию

Страница: 151 / 168

Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021 151
MSPU device can be connected to BMS system using MODBUS RTU protocol in TCP/IP
standard. For system integration, feed the Cat5 cable terminated with an RJ45 plug into the MSPU
panel computer and plug it into the LAN card slot. The service is available on port 502. Brief
description of the data exchange protocol:
1. Only command 03 from the protocol is supported in the generated query. All information
from the regulator is recorded on two 2 byte registers starting from register number
0x01:
Register number Description
01 regulator pressure of the 400 address
02 relative address and status of the controller with 400 address
03 regulator pressure of the 401 address
04 relative address and status of the controller with 401 address
05 regulator pressure of the 402 address
06 relative address and status of the controller with 402 address
07 regulator pressure of the 403 address
08 relative address and status of the controller with 403 address
09 regulator pressure of the 404 address
10 relative address and status of the controller with 404 address
… …
65 regulator pressure of the 432 address
66 relative address and status of the controller with 432 address
•
question 01 03 00 01 00 02 95 CB will return two records from index 1
o
1 byte - address of the MSPU
o
1 byte - MODBUS RTU command number - 03 registers reading (only
supported)
o
2 bytes - RTU modbus register number
o
2 bytes - number of registers to be sent
o
2 bytes - CRC sum of the question
•
answer: 01 03 04 01 00 33 24 ef 24. The content of the answer:
o
1 byte - address of the MSPU
o
1 byte - MODBUS RTU command number - 03 registers reading (only
supported)
o
1 byte - number of transmitted data bytes in response
o
The next 4 bytes are information about the controller:
▪
2 bytes - 2 bytes - current value of pressure in the protected space
recorded on the number of WORD type;
▪
1 byte - relative address of the regulator - value presented in the form
of HEX (01 = address 1, 1F = address 31);
▪
1 byte - status (the operating status of the unit, consecutive bits have
the following meaning):
-
Bit 0 = Standby - all correct - no fire signal;
-
Bit 1 = Fire - the device receives and sustains a fire signal;
-
Bit 2 = Reset - in addition to the "collective failure", there should
be information in the BMS whether this failure is not caused by a
deliberate action, i.e. "Reset";
-
Bit 3 = Smoke in the central unit;
-
Bit 4 = Correct operation - works after receiving SAP signal -
identical to the contacts;