Weidmuller WI-GTWY-9 User Manual page 100

WI-GTWY-9-xxx Wireless Gateway
In addition to cyclic data exchange with slave devices, the WI-GTWY-9-xxx Profibus Master
also supports a number of acyclic services that may be triggered via a special Message Interface.
The message interface is by default disabled, but will become enabled by also enabling a "Status
Location" via the fieldbus configuration tab in configuration software.
The message interface is used to instruct the WI-GTWY-9-xxx to perform a specific task, to
request data, to indicate certain events (alarms), or to respond to requests. The message interface
can be controlled via a host or other smart device by constructing the appropriate message in the
Message Interface Area of the WI-GTWY-9-xxx I/O Registers (radio interface). Since the
message interface is part of the radio interface, it may be controlled either remotely via
appropriate block mappings (i.e. remote WI-GTWY-9-xxx), or locally via a device on the
Profibus network (i.e. configuration tool, PLC, or other smart device).
The supported messages are listed in the table below.
Message
SET_SLAVE_MODE
GET_SLAVE_DIAG
GET_SLAVE_CONFIG
SET_SLAVE_ADDRESS
MSAC1_READ
MSAC1_WRITE
GET_LIVE_LIST
MSAC1_PROFIDRIVE_V3_PARAM_
WRITE
MSAL1_ALARM_IND
MSAL1_ALARM_CON
The message interface supports the following types of communication:
• Command - Response
A message is sent by the message initiator, and the message recipient is required to
respond. The message initiator can be either the WI-GTWY-9-xxx or host device.
• Indication
A message is sent by the message initiator, and no response is required. The message
initiator can be either the WI-GTWY-9-xxx or host device.
Message Structure
A message consists of a message header and message data (see table below). The header consists
of a series of 16-bit registers that specifies the type of message and the length of the message
data. The message data may be up to 128 x 16bit registers in length and contain data that is
specific to the particular message.
100
Description
Send control command to slave(s) (Sync/Freeze)
Get diagnostic information from a slave
Get slave configuration
Set node address of a slave (If supported by slave)
acyclic read (class 1)
acyclic write (class 1)
Get information from all nodes on the network
PROFIdrive v.3 acyclic parameter access
Alarm indication from DPV1 slave
Confirmation to FB_MSAL1_ALARM_IND
V1.18