Language Objects for Explicit Exchange
Original instructions
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Introduction
This topic describes the explicit exchange language objects for the BMX NOE 01x0 module and BMX P34 20x0 CPUs.
System Words
The following table describes the system word (%MW, READ) language objects:
Object
Description
BMX NOE 01x0
BMX P34 20x0
%MWr.m.0.0
%MWr.m.3.0
exchange status (EXCH_STS):
  • bit 0 = 1: reading of status words of the channel in progress (STS_IN_PROGR)
  • bit 1 = 1: command write in progress (CMD_IN_PROGR)
%MWr.m.0.1
%MWr.m.3.1
exchange report (EXCH_RPT):
  • bit 0 = 1: error while reading channel status (STS_ERR)
  • bit 1 = 1: error while writing a command to the channel (CMD_ERR)
Note: Always 0 for the BMX P34 20x0
Status Words
The following table describes the status word (%MW or %MD, READ) language objects:
Object
Description
BMX NOE 01x0
BMX P34 20x0
%MWr.m.0.2
%MWr.m.3.2
Standard channel faults (CH_FLT):
  • bit 4 (%MWr.m.0.2.4) = 1: Internal or channel self-test fault (INTERNAL_FLT)
  • bit 7 (%MWr.m.0.2.7) = 1: Application fault (APPLI_FLT)
%MWr.m.0.3
%MWr.m.3.3
Ethernet Port Global status (ETH_PORT_STATUS)
%MDr.m.0.4
%MDr.m.3.4
IP address (IP_ADDR)
%MWr.m.0.6
%MWr.m.3.6
number of denied Port 502 connections (P502_NB_CONN_DENIED)
%MWr.m.0.7
%MWr.m.3.7
number of received messages on the Ethernet port per second (BW_NB_MSG_IN)
%MWr.m.0.8
%MWr.m.3.8
number of useless messages filtered by the Ethernet port per second (BW_NB_MSG_FILTER)
%MWr.m.0.9
%MWr.m.3.9
number of messages dropped by the Ethernet port per second (BW_NB_MSG_DROP)
%MWr.m.0.10
%MWr.m.3.10
maximum number of received messages on the Ethernet port per second (BW_MAX_MSG_IN)
%MWr.m.0.11
%MWr.m.3.11
maximum number of useless messages filtered by the Ethernet port per second (BW_MAX_MSG_FILTER)
%MWr.m.0.12
%MWr.m.3.12
maximum number of messages dropped by the Ethernet port per second (BW_MAX_MSG_DROP)
%MWr.m.0.13
%MWr.m.3.13
maximum number of Multicast messages received per second (BW_MAX_MSG_MC)
%MWr.m.0.14
%MWr.m.3.14
maximum number of broadcast messages received per second (BW_MAX_MSG_BC)
%MWr.m.0.15
%MWr.m.3.15
reserved for future use
Command Words
The following table describes the command word (%MW, WRITE) language objects:
Object
Description
BMX NOE 01x0
BMX P34 20x0
%MWr.m.0.16
%MWr.m.3.16
Ethernet command word (ETH_CMD):
  • bit 0 = 1 for Ethernet Component Reset (ETH_RESET)
  • bit 1 = 1 for Max Message Counters reset (BW_CNT_RESET)
  • bit 2 = 1 for Messaging counters reset (P502_CNT_RESET)
%MWr.m.0.17
%MWr.m.3.17
reserved for modulo 4 address alignment
Parameter Words
The following table describes the parameter word (%MW or %MD, R/W) language objects, please note that parameters are accessible in read using the READ_STATUS function:
Object
Description
BMX NOE 01x0
BMX P34 20x0
%MWr.m.0.18
%MWr.m.3.18
PARAM_NET_CONF:
  • 0 = disabled (not supported)
  • 1 = from screen configuration (default)
  • 2 = from a server (DHCP server)
%MWr.m.0.19
%MWr.m.3.19
PARAM_DRIVER_CONF: (TBD)
Bit 0: FRAME_TYPE
%MDr.m.0.20
%MDr.m.3.20
IP address (PARAM_IP_ADDR)
%MWr.m.0.22
%MWr.m.3.22
subnetwork mask (PARAM_IP_NETMASK)
%MWr.m.0.24
%MWr.m.3.24
default gateway (PARAM_IP_GATEWAY)
%MWr.m.0.26
%MWr.m.3.26
device name (character 1 and 2) – PARAM_IP_DEVICE_NAME1
%MWr.m.0.27
%MWr.m.3.27
device name (character 3 and 4) – PARAM_IP_DEVICE_NAME2
%MWr.m.0.28
%MWr.m.3.28
device name (character 5 and 6) – PARAM_IP_DEVICE_NAME3
%MWr.m.0.29
%MWr.m.3.29
device name (character 7 and 8) – PARAM_IP_DEVICE_NAME4
%MWr.m.0.30
%MWr.m.3.30
device name (character 9 and 10) – PARAM_IP_DEVICE_NAME5
%MWr.m.0.31
%MWr.m.3.31
device name (character 11 and 12) – PARAM_IP_DEVICE_NAME6
%MWr.m.0.32
%MWr.m.3.32
device name (character 13 and 14) – PARAM_IP_DEVICE_NAME7
%MWr.m.0.33
%MWr.m.3.33
device name (character 15 and 16) – PARAM_IP_DEVICE_NAME8
NOTE: For explicit exchanges, the READ_PARAM function is not available for the following modules:
  • BMX P34 20x0
  • BMX NOE 0100