Omron GX-ID1611 User Manual page 211

 Counter status + counter present value data + external latch A data + external
latch B data + Sysmac error status (size = 27 bytes)
Offset
(byte)
0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
0 to +1: Counter status
GX-series EtherCAT Slave Unit User's Manual
D07 D06 D05
CRUN1 CERR1 Reserved
CRUN2 CERR2 Reserved
9 Encoder Input Slave Unit
D04 D03 D02
EXLB1 EXLA1 EXRES1
EXLB2 EXLA2 EXRES2
CH1 Present value data
CH2 Present value data
CH1 Latch A data
CH2 Latch A data
CH1 Latch B data
CH2 Latch B data
Sysmac error status
D01 D00
RACK1 PACK1
RACK2 PACK2
(LL)
(LH)
(HL)
(HH)
(LL)
(LH)
(HL)
(HH)
(LL)
(LH)
(HL)
(HH)
(LL)
(LH)
(HL)
(HH)
(LL)
(LH)
(HL)
(HH)
(LL)
(LH)
(HL)
9
(HH)
9 - 5