Enerpac SafeLink - Manual (Page 8)

Table 6 - Expanded System Data and Recommendations
Number of
fi xtures:
SafeLink send unit
model number:
Number of outputs
available from each
send unit:
Recommended connection to
machine control:
Output protocol:
Number of
outputs to
machine control:
1 SLS-1, SLS-2 or SLS-3 3 SLR-1 or SLR-2 24 VDC 6
2 SLS-1, SLS-2 or SLS-3 3 SLR-1 or SLR-2 24 VDC 6
3 to 4 SLS-1, SLS-2 or SLS-3 3 SLR-1 or SLR-2 with SLEM-1 24 VDC 12
5 or more
SLS-1, SLS-2 or SLS-3 3 Modbus from SLR-1 or SLR-2 Modbus 47
SLS-1, SLS-2 or SLS-3 3 SLR-1 or SLR-2 with SLEB-1 Ethernet 47
Table 7 - Modbus Holding Registers
I/O Port Receive #1 Send #1 Send #2 Send #3 Send #4 Send #5 Send #6 Send #7 Send #8
1 17 33 49 65 81 97 113 129
2 18 34 50 66 82 98 114 130
3 19 35 51 67 83 99 115 131
8 24 40 56 72 88 104 120 136
9 9
10 10
11 11
12 12
13 13
14 14
8.6 Removing an SLS Send Unit from the Network
Before taking a fixture out of service or moving it to another
system, the fixture’s SLS send unit must be removed from the
network.
Use the following procedure to unbind an SLS-1, SLS-2 or
SLS-3 send unit from an SLR-1 or SLR-2 receive unit:
Note: Refer to Section 5.0 for button locations.
1. On the SLS send unit, press and hold button #1 for 3 to 4
seconds. This will turn-off the send unit.
2. On the SLR receive unit:
• Check that the display shows “ERROR”.
• Press button #2 once.
Check that the display shows “NOD x”
Note: “x” is the ID number (node) of the SLS send unit that
was turned-off in step 1.
• Press button #2 again.
Check that the display shows “EC 53”.
• Press button #1.
Check that the display shows “CLEAR”.
• Press button #2 to accept the changes.
Check that the display shows “ERASED”.
The SLS send unit should now be unbound from the SLR
receive unit. It will no longer be included in the network.
9.0 SETTING UP EXPANDED SYSTEMS
Refer to Table 6 for an overview of SafeLink expansion
possibilities.
If only one or two additional SLS send units are required, the
SLEM-1 Expansion Unit can be used. For systems requiring
greater numbers of additional SLS send units (such as a pallet
pool system) the interface to the machine control can be
achieved using either the standard 5-Pin serial port connection
located on the SLR receive unit or by using the SLEB-1
Ethernet Bridge. The SLEB-1 allows the SafeLink system to be
connected to an Ethernet network.
9.1 Using the SLEM-1 Expansion Module
For systems with up to 4 fi xtures, where 24 VDC output is the
desired interface to the machine control, the SLEM-1 Expansion
Module (optional accessory) provides additional expansion
capabilities. The SLEM-1 allows up to two additional SLS send
units to be added to the SafeLink system.
The output terminal block of the SLEM-1 is the same as
that used on the SLR receive unit. See Figure 6 for wiring
instructions.
9.2 Setting up a Modbus Based System
For machine controls that use Modbus RTU or TCP protocols,
the SLR-1 and SLR-2 receive units provide a built in Modbus
system.
The Modbus Serial Line RTU protocol is a master-slave protocol
typically used for industrial applications. It is an open standard
implementation of Modbus based on Internet protocols.
Modbus TCP/IP is similar to Modbus RTU but transmits
information within TCP/IP data packets.
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