search

Schneider Automation Modicon Quantum Ethernet Guide de l'utilisateur Page 91

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 105
  • Table des matières
  • MARQUE LIVRES
    • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 90
Quantum Ethernet TCP/IP Modbus Application Protocol
840 USE 115 00 Version 1.0
81
The header is 7 b
y
tes lon
g
, and includes the followin
g
fields:
inv_id[2 b
y
tes] invocation id used for transaction pairin
g
proto_id[2 b
y
tes] used for intra-s
y
stem multiplexin
g
,default is 0 for Modbus
services
len[2 b
y
tes] the len field is a b
y
te count of the remainin
g
fields and
includes the dst_id and data fields.
The remainder of the pdu includes two fields:
dst_idx[1 b
y
te] destination index is used for intra-s
y
stem routin
g
of
packets.
(
currentl
y
not implemented
)
data[n b
y
tes] this is the service portion of the Modbus pdu, mb_pdu, and is
defined below
The service portion of the Modbus Application Protocol, called mb_pdu, contains 2
fields:
mb_pdu ::= { func_code[1], data[n] }
func_code[1 b
y
te] MB function code
data[n b
y
tes] this field is function code dependent and usuall
y
contains
information such as variable references, variable counts, and data offsets.
The size and content of the data field are dependent on the value of the function
code.
Vue de la page 90
1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 104 105

Commentaires sur ces manuels

Pas de commentaire
  • BMC Kip HIS Veracity Avolites
  • Bionaire Barbecues et grillades V7 Interface de câble/adaptateurs de genre Insignia Lecteurs de DVD Garmin Kit de nettoyage du matériel Nostalgia Electrics Jouets et accessoires
  • Miele W 3845 WPS Saniflo 040 Panasonic PVGS9 AEG L99691HWD Basement-watchdog Special
  • EV Rider Vita Spécifications Dell POWEREDGE R720XD Manuel de l'utilisateur Samsung DP515A2G-K02US Manuel de l'utilisateur Toshiba 20VL65R Manuel de l'utilisateur