BeiJer GN-9371 - MODBUS Special Register Map; Adapter Register Mapping; Adapter Identification Special Register (0 X1000, 4096)

GN-9371_2_3 User Manual
Page 93 of (110)
G-series GN-9371_2_3 PIO Rev. 1.02.docx
A.4 MODBUS Special Register Map
The special register map can be accessed by function code 3, 4, 6 and 16. Also the special register map
must be accessed by read/write of every each address (one address).
A.4.1 Adapter Register Mapping
Address
IEC Address
Contents
0x0000~0x07FF
%IW0~%IW2047
2048 words Input and Internal memory (Area is write-
protected)
0x0800~0x0FFF
%QW0~%QW2047
2048 words Output and Internal memory (Area is write-
enabled)
0x1000~0x1FFF
-
Special Function Register (PIO Information)
0x2000~0x2FFF
-
Special Function Register (Slot Information)
0x4000~0x5FFF
%MW0~%MW8191
2048 words Internal memory (Area is write-enabled)
A.4.2 Adapter Identification Special Register (0x1000, 4096)
Address Access
Type,
Size
Description
0x1000(4096) Read 1 word
Vendor ID = 0x02E5(741), Crevis. Co., Ltd.
0x1001(4097) Read 1 word
Device type = 0x000C, Network Adapter
0x1002(4098) Read 1 word
Product Code = 0x1004(GN-9371) / 0x1006(GN-
9372)/0x1008(GN-9373)
0x1003(4099) Read 1 word
Firmware revision, if 0x0101, revision 1.001
0x1005(4101) Read
String
up to
34bytes
Product name string
First 1word is length of valid character string
Example) response as following
“00 1D 52 4E 2D 39 32 32 32 2C 50 72 6F 66 69 62 75 73 20
41 64 61 70 74 65 72 2C 52 42 55 53 00 00 000”
Valid character size = 0x0017 =29 characters
"GN-9372(PIO)"
0x1006(4102) Read 1 word
Sum check of EEPROM
0x1010(4112) Read 2 words
Firmware release date
0x101E(4126) Read 15words
Composite Id of following address
0x1600(5632),0x1602(5634),0x1604(5636),0x1610(56
48),
0x1000(4096),0x1001(4097),0x1002(4098),0x1003(40
99),0x1010(4112).
* String Type consists of valid string length (first 1word) and array of characters.