Weidmuller WI-GTWY-9, User Manual

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Appendix 1
162
Bit Information Meaning
15 Communication
s failure
For read commands – Read Bits and Read Words – This bit is set if no
response is received to the read command after a timeout, or if a
communication fail response is received to a read.
For Write Commands this bit is set if a communication failure response
is received to the write command.
For a Poll command, this bit should not be set.
14 Startup This bit is set initially, and remains set until the first time the command
executes.
13 Force *To force the command to happen immediately regardless of the
current timer value, write a ‘1’ to this bit.
12 Waiting This bit is set when the command is active. For Write commands, the
command delays before sending to see if any more changes occur. For
Read commands, the command delays while waiting for a response from
the remote device.
11-0 Timer When the Waiting bit is clear, this field is either zero, or contains the
time (in seconds) until the command next becomes active. If this field is
zero, the field will be loaded with the configured delay value at the next
update time.
When the Waiting bit is set, and the command is a read command, this
field contains the time in seconds, within which a reply is expected. If
no reply is received within this time, the Communications failure bit is
set.
When the Waiting bit is set, and the command is a write command, the
field contains the time, in seconds before the write command is
transmitted.
Using the Force Bit:
*
Firmware versions prior to 1.50:
If Bit 13 is set to ‘1’, then the associated mapping is triggered. When the radio message is sent, the WI-
GTWY-9-xxx automatically turns Bit 13 “off” again - ready for the host device to trigger the mapping
again.
*
Firmware version 1.50 and later:
Only Bit 13 of registers 9500 – 9999 may be altered by a host device (i.e. via the fieldbus interface). For
WI-GTWY-9-xxx modules with firmware versions later than 1.50, the setting of registers 9500 – 9999
must follow the new change-of-state algorithm. The Force bit will only be activated on a transition from
0 – 1. For example to force the corresponding block mapping, first set the Force bit to ‘0’, then set the
value of the Force bit to ‘1’ (i.e. by always first writing the value 0 this ensures that the change-of-state
from 0 will be detected). Values must be held (i.e. not change) for approx. 200msec to be detected.