Figure 62: Rtu Report Device Type Message Format - GE PACSystems RX7i Reference Manual

Message (17): Report Device Type
Format:
Address
Query:
The Report Device Type query is sent by the master to a slave in order to learn what type of
programmable control or another computer it is.
▪
An Address of zero is not allowed as this cannot be a broadcast request.
▪
The Function code is 17.
Response:
▪
The Byte Count field is one byte in length and is equal to 5.
▪
The Device Type field is one byte in length and is equal to 43 (hexadecimal) for PACSystems
▪
The Slave Run Light field is one byte in length. The Slave Run Light byte is equal to OFFH if the CPU is
in RUN Mode. It is equal to 0 if the CPU is not in RUN Mode.
▪
The Data field contains three bytes. For PACSystems CPUs, the first byte is the Minor Type, and the
remaining bytes are zeroes. The following table lists minor types.
87
Does not apply to CPE330, which has no serial ports.
GFK-2222AD
Address
Func 17 Byte
Count
Normal Response

Figure 62: RTU Report Device Type Message Format

Response Data
(Minor Type)
02 hex
04 hex
05 hex
06 hex
08 hex
0A hex
0C hex
10 hex
11 hex
12 hex
18 hex
April 2018
Chapter 6. Serial I/O, SNP & RTU Protocols
Func 17
Error Check
Query
Device Slave Run
Light
Type 43
87
CPU Model
IC698CPE010
IC698CPE020
IC698CRE020
IC698CPE030
IC698CPE040
IC695CPE302
IC695CPE305
IC695CPU310
IC695NIU001
IC695CPU320
IC695CRU320
IC695CPE302
IC695CPE305
IC695CPU315
Data Error Check
247